diff --git a/go.sum b/go.sum
index 2dec127..60c0a7e 100644
--- a/go.sum
+++ b/go.sum
@@ -32,6 +32,7 @@
 cloud.google.com/go/bigquery v1.3.0/go.mod h1:PjpwJnslEMmckchkHFfq+HTD2DmtT67aNFKH1/VBDHE=
 cloud.google.com/go/bigquery v1.4.0/go.mod h1:S8dzgnTigyfTmLBfrtrhyYhwRxG72rYxvftPBK2Dvzc=
 cloud.google.com/go/bigquery v1.5.0/go.mod h1:snEHRnqQbz117VIFhE8bmtwIDY80NLUZUMb4Nv6dBIg=
+cloud.google.com/go/bigquery v1.6.0/go.mod h1:hyFDG0qSGdHNz8Q6nDN8rYIkld0q/+5uBZaelxiDLfE=
 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/bigtable v1.2.0 h1:F4cCmA4nuV84V5zYQ3MKY+M1Cw1avHDuf3S/LcZPA9c=
@@ -221,6 +222,7 @@
 github.com/containerd/containerd v1.3.3/go.mod h1:bC6axHOhabU15QhwfG7w5PipXdVtMXFTttgp+kVtyUA=
 github.com/coreos/bbolt v1.3.2/go.mod h1:iRUV2dpdMOn7Bo10OQBFzIJO9kkE559Wcmn+qkEiiKk=
 github.com/coreos/etcd v3.3.10+incompatible/go.mod h1:uF7uidLiAD3TWHmW31ZFd/JWoc32PjwdhPthX9715RE=
+github.com/coreos/etcd v3.3.13+incompatible/go.mod h1:uF7uidLiAD3TWHmW31ZFd/JWoc32PjwdhPthX9715RE=
 github.com/coreos/go-etcd v2.0.0+incompatible/go.mod h1:Jez6KQU2B/sWsbdaef3ED8NzMklzPG4d5KIOhIy30Tk=
 github.com/coreos/go-semver v0.2.0/go.mod h1:nnelYz7RCh+5ahJtPPxZlU+153eP4D4r3EedlOD2RNk=
 github.com/coreos/go-systemd v0.0.0-20190321100706-95778dfbb74e/go.mod h1:F5haX7vjVVG0kc13fIWeqUViNPyEJxv/OmvnBo0Yme4=
@@ -749,6 +751,8 @@
 github.com/spf13/cobra v0.0.6/go.mod h1:/6GTrnGXV9HjY+aR4k0oJ5tcvakLuG6EuKReYlHNrgE=
 github.com/spf13/cobra v0.0.7 h1:FfTH+vuMXOas8jmfb5/M7dzEYx7LpcLb7a0LPe34uOU=
 github.com/spf13/cobra v0.0.7/go.mod h1:/6GTrnGXV9HjY+aR4k0oJ5tcvakLuG6EuKReYlHNrgE=
+github.com/spf13/cobra v1.0.0 h1:6m/oheQuQ13N9ks4hubMG6BnvwOeaJrqSPLahSnczz8=
+github.com/spf13/cobra v1.0.0/go.mod h1:/6GTrnGXV9HjY+aR4k0oJ5tcvakLuG6EuKReYlHNrgE=
 github.com/spf13/jwalterweatherman v1.0.0/go.mod h1:cQK4TGJAtQXfYWX+Ddv3mKDzgVb68N+wFjFa4jdeBTo=
 github.com/spf13/jwalterweatherman v1.1.0 h1:ue6voC5bR5F8YxI5S67j9i582FU4Qvo2bmqnqMYADFk=
 github.com/spf13/jwalterweatherman v1.1.0/go.mod h1:aNWZUN0dPAAO/Ljvb5BEdw96iTZ0EXowPYD95IqWIGo=
@@ -762,6 +766,8 @@
 github.com/spf13/viper v1.4.0/go.mod h1:PTJ7Z/lr49W6bUbkmS1V3by4uWynFiR9p7+dSq/yZzE=
 github.com/spf13/viper v1.6.2 h1:7aKfF+e8/k68gda3LOjo5RxiUqddoFxVq4BKBPrxk5E=
 github.com/spf13/viper v1.6.2/go.mod h1:t3iDnF5Jlj76alVNuyFBk5oUMCvsrkbvZK0WQdfDi5k=
+github.com/spf13/viper v1.6.3 h1:pDDu1OyEDTKzpJwdq4TiuLyMsUgRa/BT5cn5O62NoHs=
+github.com/spf13/viper v1.6.3/go.mod h1:jUMtyi0/lB5yZH/FjyGAoH7IMNrIhlBf6pXZmbMDvzw=
 github.com/src-d/gcfg v1.4.0 h1:xXbNR5AlLSA315x2UO+fTSSAXCDf+Ar38/6oyGbDKQ4=
 github.com/src-d/gcfg v1.4.0/go.mod h1:p/UMsR43ujA89BJY9duynAwIpvqEujIH/jFlfL7jWoI=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
@@ -896,6 +902,8 @@
 go.chromium.org/luci v0.0.0-20200408222616-82f4b1b520e3/go.mod h1:MIQewVTLvOvc0UioV0JNqTNO/RspKFS0XEeoKrOxsdM=
 go.chromium.org/luci v0.0.0-20200410032135-d9943f49d18d h1:gYwxTi2zxlNqV8viQqM9A9DnK4di3Gm4qwUEvBiEpik=
 go.chromium.org/luci v0.0.0-20200410032135-d9943f49d18d/go.mod h1:MIQewVTLvOvc0UioV0JNqTNO/RspKFS0XEeoKrOxsdM=
+go.chromium.org/luci v0.0.0-20200410225717-28d3dd74d42a h1:2lje64zFOjYVzk9oLKB4bBv6bxlRj8OwVdLVRdJ/+OM=
+go.chromium.org/luci v0.0.0-20200410225717-28d3dd74d42a/go.mod h1:MIQewVTLvOvc0UioV0JNqTNO/RspKFS0XEeoKrOxsdM=
 go.etcd.io/bbolt v1.3.2/go.mod h1:IbVyRI1SCnLcuJnV2u8VeU0CEYM7e686BmAb1XKL+uU=
 go.mongodb.org/mongo-driver v1.1.0/go.mod h1:u7ryQJ+DOzQmeO7zB6MHyr8jkEQvC8vH7qLUO4lqsUM=
 go.opencensus.io v0.20.1/go.mod h1:6WKK9ahsWS3RSO+PY9ZHZUfv2irvY6gN279GOPZjmmk=
@@ -997,6 +1005,8 @@
 go.skia.org/infra v0.0.0-20200408235250-cf7e4086d92e/go.mod h1:74GYPcK49FdSGaJhGMF3TPR9VLgyV52x6k2rbJqwdwM=
 go.skia.org/infra v0.0.0-20200409214532-a2e15e772d61 h1:YvkZAFAzMXHiCTr8HtOlWsPPEdL82YaWbGpLyCjxzcI=
 go.skia.org/infra v0.0.0-20200409214532-a2e15e772d61/go.mod h1:q7h3SgtclogwVLh4veK8teURn6UKEdokziQVWVzbCbE=
+go.skia.org/infra v0.0.0-20200410210345-22d47761825b h1:mtLE2Tf1EF/A08Pzccq6tEcalVBnEBxg8Qje5tgxtoM=
+go.skia.org/infra v0.0.0-20200410210345-22d47761825b/go.mod h1:AmWwqwUAQ1aZuiJuVtXTD701KAjDG/ao35PLLYsdiBQ=
 go.uber.org/atomic v1.3.2/go.mod h1:gD2HeocX3+yG+ygLZcrzQJaqmWj9AIm7n08wl/qW/PE=
 go.uber.org/atomic v1.4.0/go.mod h1:gD2HeocX3+yG+ygLZcrzQJaqmWj9AIm7n08wl/qW/PE=
 go.uber.org/multierr v1.1.0/go.mod h1:wR5kodmAFQ0UK8QlbwjlSNy0Z68gJhDJUG5sjR94q/0=
@@ -1361,8 +1371,11 @@
 golang.org/x/tools v0.0.0-20200408032209-46bd65c8538f/go.mod h1:EkVYQZoAsY45+roYkvgYkIh4xh/qjgUK9TdY2XT94GE=
 golang.org/x/tools v0.0.0-20200408132156-9ee5ef7a2c0d h1:2DXIdtvIYvvWOcAOsX81FwOUBoQoMZhosWn7KjXEl94=
 golang.org/x/tools v0.0.0-20200408132156-9ee5ef7a2c0d/go.mod h1:EkVYQZoAsY45+roYkvgYkIh4xh/qjgUK9TdY2XT94GE=
+golang.org/x/tools v0.0.0-20200409170454-77362c5149f0/go.mod h1:EkVYQZoAsY45+roYkvgYkIh4xh/qjgUK9TdY2XT94GE=
 golang.org/x/tools v0.0.0-20200410040751-3bd20875a2eb h1:RyH5RJIzat0mPE3Bxyfk0H7h8QTOUPO9gelM+5LI/RQ=
 golang.org/x/tools v0.0.0-20200410040751-3bd20875a2eb/go.mod h1:EkVYQZoAsY45+roYkvgYkIh4xh/qjgUK9TdY2XT94GE=
+golang.org/x/tools v0.0.0-20200410194907-79a7a3126eef h1:RHORRhs540cYZYrzgU2CPUyykkwZM78hGdzocOo9P8A=
+golang.org/x/tools v0.0.0-20200410194907-79a7a3126eef/go.mod h1:EkVYQZoAsY45+roYkvgYkIh4xh/qjgUK9TdY2XT94GE=
 golang.org/x/xerrors v0.0.0-20190410155217-1f06c39b4373/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20190513163551-3ee3066db522/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
@@ -1495,6 +1508,8 @@
 google.golang.org/genproto v0.0.0-20200408120641-fbb3ad325eb7/go.mod h1:55QSHmfGQM9UVYDPBsyGGes0y52j32PQ3BqQfXhyH3c=
 google.golang.org/genproto v0.0.0-20200409111301-baae70f3302d h1:I7Vuu5Ejagca+VcgfBINHke3xwjCTYnIG4Q57fv0wYY=
 google.golang.org/genproto v0.0.0-20200409111301-baae70f3302d/go.mod h1:55QSHmfGQM9UVYDPBsyGGes0y52j32PQ3BqQfXhyH3c=
+google.golang.org/genproto v0.0.0-20200410110633-0848e9f44c36 h1:QGM8iDIfHwTRMruKa7+aKDNRMQcWKeS6LDhdMiucYCE=
+google.golang.org/genproto v0.0.0-20200410110633-0848e9f44c36/go.mod h1:55QSHmfGQM9UVYDPBsyGGes0y52j32PQ3BqQfXhyH3c=
 google.golang.org/grpc v1.17.0/go.mod h1:6QZJwpn2B+Zp71q/5VxRsJ6NXXVCE5NRUHRo+f3cWCs=
 google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
 google.golang.org/grpc v1.20.1 h1:Hz2g2wirWK7H0qIIhGIqRGTuMwTE8HEKFnDZZ7lm9NU=