New GCP object names + reboot-api updates

This release features two items:

• Prometheus will now monitor the newly renamed GCP objects in the platform cluster.
• The reboot API is now at v0.1.2, and exposed Prometheus metrics on port 9990.

Updates legacy alerts to not fire on migrated machines

We have some alerts configured for legacy metrics that will begin to fire as we migrate machines to the platform cluster. This PR includes updates to some of those legacy alerts which should prevent them from firing if the machine is already part of the platform cluster.

weekly release

Add blackbox-exporter-ipv6 vm to Ops_OamOverview dashboard
#488

Adds scraping of the Linode VM for IPv6 monitoring.
#487

Break out 4xx and 5xx errors into different lines
#485

Docker image version updates + assorted fixes

• snmp_exporter Docker image is now v0.15.0
• gcp-service-discovery Docker image is now v1.5.0
• Adds new alerts for the "host" experiment.
• Removes alerts for nodeinfo now that nodeinfo is part of the "host" experiment.
• Adds absent() alert for etcd metrics.

GMX and alertmanager-receiver updates + SRE rotation dashboard

v2.14.0

Upgrades GMX's image version from v0.1.2 to v0.2.0. (#471)

robot image and grafana upgrade

#467, #469

New alerts, dashboard fixes, updated reboot-api and snmp-exporter deployment

v2.12.0

Update reboot-api deployment to v0.1.1. (#465)

Rebot deployment

Adds rebot deployment and changes to alerts.

Dashboard improvements and Reboot API deployment

Main changes:

• Platform cluster etcd alerts + new WorkloadOverview dashboard
• Improvements to the Pipeline Batch Throughput dashboard
• Reboot API deployment

lower annotation rate bar for NDT tests & Update version of gcp-service-discovery

#438
Update version of gcp-service-discovery

#432
low the triggering bar for annotation rate too low to 98% from 99%