diff --git a/go.sum b/go.sum
index d982266..2b84726 100644
--- a/go.sum
+++ b/go.sum
@@ -114,6 +114,8 @@
 github.com/aws/aws-sdk-go v1.23.2/go.mod h1:KmX6BPdI08NWTb3/sm4ZGu5ShLoqVDhKgpiN924inxo=
 github.com/aws/aws-sdk-go v1.23.3/go.mod h1:KmX6BPdI08NWTb3/sm4ZGu5ShLoqVDhKgpiN924inxo=
 github.com/aws/aws-sdk-go v1.23.4/go.mod h1:KmX6BPdI08NWTb3/sm4ZGu5ShLoqVDhKgpiN924inxo=
+github.com/aws/aws-sdk-go v1.23.5/go.mod h1:KmX6BPdI08NWTb3/sm4ZGu5ShLoqVDhKgpiN924inxo=
+github.com/aws/aws-sdk-go v1.23.6/go.mod h1:KmX6BPdI08NWTb3/sm4ZGu5ShLoqVDhKgpiN924inxo=
 github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
 github.com/beorn7/perks v1.0.0 h1:HWo1m869IqiPhD389kmkxeTalrjNbbJTC8LXupb+sl0=
 github.com/beorn7/perks v1.0.0/go.mod h1:KWe93zE9D1o94FZ5RNwFwVgaQK1VOXiVxmqh+CedLV8=
@@ -205,6 +207,7 @@
 github.com/go-openapi/swag v0.19.2/go.mod h1:POnQmlKehdgb5mhVOsnJFsivZCEZ/vjK9gh66Z9tfKk=
 github.com/go-openapi/swag v0.19.3/go.mod h1:POnQmlKehdgb5mhVOsnJFsivZCEZ/vjK9gh66Z9tfKk=
 github.com/go-openapi/swag v0.19.4/go.mod h1:POnQmlKehdgb5mhVOsnJFsivZCEZ/vjK9gh66Z9tfKk=
+github.com/go-openapi/swag v0.19.5/go.mod h1:POnQmlKehdgb5mhVOsnJFsivZCEZ/vjK9gh66Z9tfKk=
 github.com/go-sql-driver/mysql v1.4.0/go.mod h1:zAC/RDZ24gD3HViQzih4MyKcchzm+sOG5ZlKdlhCg5w=
 github.com/go-sql-driver/mysql v1.4.1 h1:g24URVg0OFbNUTx9qqY1IRZ9D9z3iPyi5zKhQZpNwpA=
 github.com/go-sql-driver/mysql v1.4.1/go.mod h1:zAC/RDZ24gD3HViQzih4MyKcchzm+sOG5ZlKdlhCg5w=
@@ -507,11 +510,14 @@
 github.com/unrolled/secure v1.0.1/go.mod h1:R6rugAuzh4TQpbFAq69oqZggyBQxFRFQIewtz5z7Jsc=
 github.com/vektra/mockery v0.0.0-20181123154057-e78b021dcbb5 h1:Xim2mBRFdXzXmKRO8DJg/FJtn/8Fj9NOEpO6+WuMPmk=
 github.com/vektra/mockery v0.0.0-20181123154057-e78b021dcbb5/go.mod h1:ppEjwdhyy7Y31EnHRDm1JkChoC7LXIJ7Ex0VYLWtZtQ=
+github.com/willf/bitset v1.1.10 h1:NotGKqX0KwQ72NUzqrjZq5ipPNDQex9lo3WpaS8L2sc=
+github.com/willf/bitset v1.1.10/go.mod h1:RjeCKbqT1RxIR/KWY6phxZiaY1IyutSBfGjNPySAYV4=
 github.com/xiang90/probing v0.0.0-20190116061207-43a291ad63a2/go.mod h1:UETIi67q53MR2AWcXfiuqkDkRtnGDLqkBTpCHuJHxtU=
 github.com/xordataexchange/crypt v0.0.3-0.20170626215501-b2862e3d0a77/go.mod h1:aYKd//L2LvnjZzWKhF00oedf4jCCReLcmhLdhm1A27Q=
 github.com/yosuke-furukawa/json5 v0.1.1/go.mod h1:sw49aWDqNdRJ6DYUtIQiaA3xyj2IL9tjeNYmX2ixwcU=
 github.com/zeebo/bencode v1.0.0 h1:zgop0Wu1nu4IexAZeCZ5qbsjU4O1vMrfCrVgUjbHVuA=
 github.com/zeebo/bencode v1.0.0/go.mod h1:Ct7CkrWIQuLWAy9M3atFHYq4kG9Ao/SsY5cdtCXmp9Y=
+go.chromium.org/gae v0.0.0-20190620211143-2580da480a89/go.mod h1:ypuIZj/TmtaQgUYPNNu0iKlsUkuv10PROeqHCNrqrog=
 go.chromium.org/luci v0.0.0-20190501011227-60ac53221b79 h1:M2fp1goqPXZtgqorEv0XWgqx69cENZtIYkhSOq8Ypus=
 go.chromium.org/luci v0.0.0-20190501011227-60ac53221b79/go.mod h1:MIQewVTLvOvc0UioV0JNqTNO/RspKFS0XEeoKrOxsdM=
 go.chromium.org/luci v0.0.0-20190528031904-616b16eb1d99 h1:sNM8JWdRLl8momaHAMq+yaodWtZLwQK1fx0yHzeTZGg=
@@ -593,6 +599,9 @@
 go.chromium.org/luci v0.0.0-20190817201146-7dcb2ec41a67/go.mod h1:MIQewVTLvOvc0UioV0JNqTNO/RspKFS0XEeoKrOxsdM=
 go.chromium.org/luci v0.0.0-20190820001312-48e45368b9da h1:VuofvtQQf2luuiXXfclzQmkxPvwvvT5xKhs96iIKIY8=
 go.chromium.org/luci v0.0.0-20190820001312-48e45368b9da/go.mod h1:MIQewVTLvOvc0UioV0JNqTNO/RspKFS0XEeoKrOxsdM=
+go.chromium.org/luci v0.0.0-20190820195234-a0a6c015bf87/go.mod h1:MIQewVTLvOvc0UioV0JNqTNO/RspKFS0XEeoKrOxsdM=
+go.chromium.org/luci v0.0.0-20190821205903-243cb9481e13 h1:KM1RojNlSHsKRtiY56iIXv1o3lbQGUI/8M3UivvC9Ww=
+go.chromium.org/luci v0.0.0-20190821205903-243cb9481e13/go.mod h1:MIQewVTLvOvc0UioV0JNqTNO/RspKFS0XEeoKrOxsdM=
 go.etcd.io/bbolt v1.3.2/go.mod h1:IbVyRI1SCnLcuJnV2u8VeU0CEYM7e686BmAb1XKL+uU=
 go.etcd.io/bbolt v1.3.3/go.mod h1:IbVyRI1SCnLcuJnV2u8VeU0CEYM7e686BmAb1XKL+uU=
 go.opencensus.io v0.20.1/go.mod h1:6WKK9ahsWS3RSO+PY9ZHZUfv2irvY6gN279GOPZjmmk=
@@ -705,6 +714,8 @@
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 go.skia.org/infra v0.0.0-20190819190708-21759b4b5e8b h1:DxOeCIdnii6FcqPpJPbg0GKhZEHhzgMMKTG1C4uD0zo=
 go.skia.org/infra v0.0.0-20190819190708-21759b4b5e8b/go.mod h1:N+ybPfnZuB2IH5fsg/Q18e5kMqigTHusLEdrXyDWlpE=
+go.skia.org/infra v0.0.0-20190821223630-44629e71e9e6 h1:T+9WGfKoCCaFXOl3btTzpzrb3ffqTRgryhdqZg2+uoQ=
+go.skia.org/infra v0.0.0-20190821223630-44629e71e9e6/go.mod h1:3m0vI1wCIPMGcFeQqa6VOOQMvmroQYxDaXu3vUorTZQ=
 go.skia.org/skia v0.0.0-20190503181046-70aab823547a h1:+9xKwnzXTkTu+2ZVhffRu0A60Jx/gOETiNlKkzqbnRY=
 go.skia.org/skia v0.0.0-20190503181046-70aab823547a/go.mod h1:oVrxmr1FXbVQ7PeGtZ28Kg5wPvB+bNsnw1n2j5rtfTY=
 go.uber.org/atomic v1.4.0/go.mod h1:gD2HeocX3+yG+ygLZcrzQJaqmWj9AIm7n08wl/qW/PE=
@@ -724,6 +735,7 @@
 golang.org/x/crypto v0.0.0-20190618222545-ea8f1a30c443/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
 golang.org/x/crypto v0.0.0-20190621222207-cc06ce4a13d4/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
 golang.org/x/crypto v0.0.0-20190701094942-4def268fd1a4/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
+golang.org/x/crypto v0.0.0-20190820162420-60c769a6c586/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
 golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
 golang.org/x/exp v0.0.0-20190306152737-a1d7652674e8/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
 golang.org/x/exp v0.0.0-20190429183610-475c5042d3f1/go.mod h1:ZjyILWgesfNpC6sMxTJOJm9Kp84zZh5NQWvqDGG3Qr8=
@@ -972,6 +984,9 @@
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 golang.org/x/tools v0.0.0-20190820033707-85edb9ef3283/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
+golang.org/x/tools v0.0.0-20190820205717-547ecf7b1ef1/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
+golang.org/x/tools v0.0.0-20190822000311-fc82fb2afd64 h1:4EN1tY9aQxwLGYHWT5WdQN56Xzbwlg2UTINDbZ04l10=
+golang.org/x/tools v0.0.0-20190822000311-fc82fb2afd64/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools/gopls v0.1.0/go.mod h1:p8Q0IUu6EEeGxqmoN/g6Et3gReLCGA7PtNRdyOxcWJE=
 golang.org/x/tools/gopls v0.1.1/go.mod h1:RYlHDmWjvTa1HuWNyEKa6/zzI2ums47cfsozmM0466w=
 golang.org/x/tools/gopls v0.1.3/go.mod h1:vrCQzOKxvuiZLjCKSmbbov04oeBQQOb4VQqwYK2PWIY=
@@ -988,6 +1003,8 @@
 google.golang.org/api v0.7.0/go.mod h1:WtwebWUNSVBH/HAw79HIFXZNqEvBhG+Ra+ax0hx3E3M=
 google.golang.org/api v0.8.0 h1:VGGbLNyPF7dvYHhcUGYBBGCRDDK0RRJAI6KCvo0CL+E=
 google.golang.org/api v0.8.0/go.mod h1:o4eAsZoiT+ibD93RtjEohWalFOjRDx6CVaqeizhEnKg=
+google.golang.org/api v0.9.0 h1:jbyannxz0XFD3zdjgrSUsaJbgpH4eTrkdhRChkHPfO8=
+google.golang.org/api v0.9.0/go.mod h1:o4eAsZoiT+ibD93RtjEohWalFOjRDx6CVaqeizhEnKg=
 google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9YwlJXL52JkM=
 google.golang.org/appengine v1.4.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
 google.golang.org/appengine v1.5.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
@@ -1091,6 +1108,7 @@
 k8s.io/api v0.0.0-20190813020757-36bff7324fb7/go.mod h1:3Iy+myeAORNCLgjd/Xu9ebwN7Vh59Bw0vh9jhoX+V58=
 k8s.io/api v0.0.0-20190813220812-4c9d9526570f/go.mod h1:jQ/7CcVOYUjK7L7XC7+yxtZdjG6mm61Bmv9LU2K7M7c=
 k8s.io/api v0.0.0-20190814101207-0772a1bdf941/go.mod h1:PBHnH5pdKCvv/+J4D3mpFXQCHFqtBbB1JvlkIVrfqrc=
+k8s.io/api v0.0.0-20190820101039-d651a1528133/go.mod h1:AlhL1I0Xqh5Tyz0HsxjEhy+iKci9l1Qy3UMDFW7iG3A=
 k8s.io/apimachinery v0.0.0-20190424212440-527a9d33701e/go.mod h1:5CBnzrKYGHzv9ZsSKmQ8wHt4XI4/TUBPDwYM9FlZMyw=
 k8s.io/apimachinery v0.0.0-20190425132440-17f84483f500/go.mod h1:5CBnzrKYGHzv9ZsSKmQ8wHt4XI4/TUBPDwYM9FlZMyw=
 k8s.io/apimachinery v0.0.0-20190430211124-5bae42371a56/go.mod h1:5CBnzrKYGHzv9ZsSKmQ8wHt4XI4/TUBPDwYM9FlZMyw=
@@ -1119,6 +1137,8 @@
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+k8s.io/apimachinery v0.0.0-20190820100750-21ddcbbef9e1/go.mod h1:EZoIMuAgG/4v58YL+bz0kqnivqupk28fKYxFCa5e6X8=
+k8s.io/apimachinery v0.0.0-20190820100751-ac02f8882ef6/go.mod h1:EZoIMuAgG/4v58YL+bz0kqnivqupk28fKYxFCa5e6X8=
 k8s.io/client-go v0.0.0-20190425172711-65184652c889/go.mod h1:PeVFCnjeDy6EwLN+wdDIZd1DwDY6jnkpQt9psMo5YRU=
 k8s.io/gengo v0.0.0-20190128074634-0689ccc1d7d6/go.mod h1:ezvh/TsK7cY6rbqRK0oQQ8IAqLxYwwyPxAX1Pzy0ii0=
 k8s.io/gengo v0.0.0-20190327210449-e17681d19d3a/go.mod h1:ezvh/TsK7cY6rbqRK0oQQ8IAqLxYwwyPxAX1Pzy0ii0=
@@ -1153,4 +1173,5 @@
 sigs.k8s.io/structured-merge-diff v0.0.0-20190719182312-e94e05bfbbe3/go.mod h1:wWxsB5ozmmv/SG7nM11ayaAW51xMvak/t1r0CSlcokI=
 sigs.k8s.io/structured-merge-diff v0.0.0-20190724202554-0c1d754dd648/go.mod h1:IIgPezJWb76P0hotTxzDbWsMYB8APh18qZnxkomBpxA=
 sigs.k8s.io/structured-merge-diff v0.0.0-20190817042607-6149e4549fca/go.mod h1:IIgPezJWb76P0hotTxzDbWsMYB8APh18qZnxkomBpxA=
+sigs.k8s.io/structured-merge-diff v0.0.0-20190820212518-960c3cc04183/go.mod h1:IIgPezJWb76P0hotTxzDbWsMYB8APh18qZnxkomBpxA=
 sigs.k8s.io/yaml v1.1.0/go.mod h1:UJmg0vDUVViEyp3mgSv9WPwZCDxu4rQW1olrI1uml+o=