diff --git a/go.sum b/go.sum
index 884fd6b..920704e 100644
--- a/go.sum
+++ b/go.sum
@@ -15,6 +15,13 @@
 cloud.google.com/go v0.44.0/go.mod h1:iSa0KzasP4Uvy3f1mN/7PiObzGgflwredwwASm/v6AU=
 cloud.google.com/go v0.44.1 h1:7gXaI3V/b4DRaK++rTqhRajcT7z8gtP0qKMZTXqlySM=
 cloud.google.com/go v0.44.1/go.mod h1:iSa0KzasP4Uvy3f1mN/7PiObzGgflwredwwASm/v6AU=
+cloud.google.com/go v0.44.2/go.mod h1:60680Gw3Yr4ikxnPRS/oxxkBccT6SA1yMk63TGekxKY=
+cloud.google.com/go v0.44.3 h1:0sMegbmn/8uTwpNkB0q9cLEpZ2W5a6kl+wtBQgPWBJQ=
+cloud.google.com/go v0.44.3/go.mod h1:60680Gw3Yr4ikxnPRS/oxxkBccT6SA1yMk63TGekxKY=
+cloud.google.com/go/bigquery v1.0.1/go.mod h1:i/xbL2UlR5RvWAURpBYZTtm/cXjCha9lbfbpx4poX+o=
+cloud.google.com/go/bigtable v1.0.0 h1:2DCxzxiuoWubL6J0yl4rUtFtIJAX566mcefQS3xy6us=
+cloud.google.com/go/bigtable v1.0.0/go.mod h1:N+NeT8ICfOM1Ek4CeP03mSESb2x+qLkSC0+CRBEsvAA=
+cloud.google.com/go/datastore v1.0.0/go.mod h1:LXYbyblFSglQ5pkeyhO+Qmw7ukd3C+pD7TKLgZqpHYE=
 cloud.google.com/go/logging v1.0.0 h1:kaunpnoEh9L4hu6JUsBa8Y20LBfKnCuDhKUgdZp7oK8=
 cloud.google.com/go/logging v1.0.0/go.mod h1:V1cc3ogwobYzQq5f2R7DS/GvRIrI4FKj01Gs5glwAls=
 contrib.go.opencensus.io/exporter/ocagent v0.4.12/go.mod h1:450APlNTSR6FrvC3CTRqYosuDstRB9un7SOx2k/9ckA=
@@ -101,6 +108,7 @@
 github.com/aws/aws-sdk-go v1.22.2/go.mod h1:KmX6BPdI08NWTb3/sm4ZGu5ShLoqVDhKgpiN924inxo=
 github.com/aws/aws-sdk-go v1.22.3/go.mod h1:KmX6BPdI08NWTb3/sm4ZGu5ShLoqVDhKgpiN924inxo=
 github.com/aws/aws-sdk-go v1.22.4/go.mod h1:KmX6BPdI08NWTb3/sm4ZGu5ShLoqVDhKgpiN924inxo=
+github.com/aws/aws-sdk-go v1.23.0/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=
@@ -560,6 +568,8 @@
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 go.chromium.org/luci v0.0.0-20190813043604-bacf46204919 h1:E3rOIw6slnPCc96wMAWFQ0xJeg3LUHQQU1OYgB2SpA4=
 go.chromium.org/luci v0.0.0-20190813043604-bacf46204919/go.mod h1:MIQewVTLvOvc0UioV0JNqTNO/RspKFS0XEeoKrOxsdM=
+go.chromium.org/luci v0.0.0-20190814000021-c916cf091f7e h1:VZ2mVZCuSLTdh5RZC4QpMyAkj5VPQ9ZBDQo+XewlEhc=
+go.chromium.org/luci v0.0.0-20190814000021-c916cf091f7e/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=
@@ -662,6 +672,8 @@
 go.skia.org/infra v0.0.0-20190811172506-db30b03dfea1/go.mod h1:PgvChKXNawYFI57OouC/mdjhcoR2cQv+NEml9tJR6MA=
 go.skia.org/infra v0.0.0-20190813002646-903d961709e9 h1:/tZPqeVOqkuLCG4OlF9aBpfOWX8wszUkMkiuE61Z2Ek=
 go.skia.org/infra v0.0.0-20190813002646-903d961709e9/go.mod h1:XP4QML3sRvQbvRIVWjjy8ruIEcCEYrS5zQwFxbAKb5c=
+go.skia.org/infra v0.0.0-20190814044408-17aa8310e51d h1:le/O6uhYlLkRtSWq5uEsXJ+lsoQahVezdW0+0rUYn9k=
+go.skia.org/infra v0.0.0-20190814044408-17aa8310e51d/go.mod h1:8KYYQ+Juv2mcUECVQaVRZHNhOO1H1j11EcvUo0vq2O8=
 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=
@@ -742,6 +754,8 @@
 golang.org/x/net v0.0.0-20190628185345-da137c7871d7/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20190724013045-ca1201d0de80 h1:Ao/3l156eZf2AW5wK8a7/smtodRU+gha3+BeqJ69lRk=
 golang.org/x/net v0.0.0-20190724013045-ca1201d0de80/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
+golang.org/x/net v0.0.0-20190813141303-74dc4d7220e7 h1:fHDIZ2oxGnUZRN6WgWFCbYBjH9uqVPRCUVUDhs0wnbA=
+golang.org/x/net v0.0.0-20190813141303-74dc4d7220e7/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
 golang.org/x/oauth2 v0.0.0-20190226205417-e64efc72b421/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
 golang.org/x/oauth2 v0.0.0-20190319182350-c85d3e98c914/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
@@ -806,6 +820,8 @@
 golang.org/x/sys v0.0.0-20190804053845-51ab0e2deafa/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190812172437-4e8604ab3aff h1:u5LtynOOWSPG+jkEa3Y4ATlQ05vVeRvFjYSvbG0z6uw=
 golang.org/x/sys v0.0.0-20190812172437-4e8604ab3aff/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20190813064441-fde4db37ae7a h1:aYOabOQFp6Vj6W1F80affTUvO9UxmJRx8K0gsfABByQ=
+golang.org/x/sys v0.0.0-20190813064441-fde4db37ae7a/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/text v0.0.0-20160726164857-2910a502d2bf/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.1-0.20180807135948-17ff2d5776d2/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
@@ -913,6 +929,8 @@
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+golang.org/x/tools v0.0.0-20190813214729-9dba7caff850 h1:I+2i9HEjvv+3iJrNMhjMJOMF/FXz9eI08iBlDF4w24I=
+golang.org/x/tools v0.0.0-20190813214729-9dba7caff850/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools/gopls v0.1.0/go.mod h1:p8Q0IUu6EEeGxqmoN/g6Et3gReLCGA7PtNRdyOxcWJE=
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 golang.org/x/tools/gopls v0.1.3/go.mod h1:vrCQzOKxvuiZLjCKSmbbov04oeBQQOb4VQqwYK2PWIY=
@@ -974,6 +992,8 @@
 google.golang.org/grpc v1.22.0/go.mod h1:Y5yQAOtifL1yxbo5wqy6BxZv8vAUGQwXBOALyacEbxg=
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 google.golang.org/grpc v1.22.1/go.mod h1:Y5yQAOtifL1yxbo5wqy6BxZv8vAUGQwXBOALyacEbxg=
+google.golang.org/grpc v1.23.0 h1:AzbTB6ux+okLTzP8Ru1Xs41C303zdcfEht7MQnYJt5A=
+google.golang.org/grpc v1.23.0/go.mod h1:Y5yQAOtifL1yxbo5wqy6BxZv8vAUGQwXBOALyacEbxg=
 gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
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@@ -1023,6 +1043,7 @@
 k8s.io/api v0.0.0-20190808180749-077ce48e77da/go.mod h1:irWZZ8fkUYB2+fwyvjN9QMt0m5/1PYsJc1eJElzGHeM=
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+k8s.io/api v0.0.0-20190813220812-4c9d9526570f/go.mod h1:jQ/7CcVOYUjK7L7XC7+yxtZdjG6mm61Bmv9LU2K7M7c=
 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=
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@@ -1047,9 +1068,12 @@
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