Adding @plumpy and @scottfrederick

Approved via:
- spinnaker/governance#9
- spinnaker/governance#10

fix(build): Don't increase minor version for perf tasks (spinnaker#4483…

…) (spinnaker#4520)

These should be considered in the same category as fix tasks

fix(build): Don't increase minor version for perf tasks (spinnaker#4483…

…) (spinnaker#4509)

These should be considered in the same category as fix tasks

fix(build): Don't increase minor version for perf tasks (spinnaker#4483…

…) (spinnaker#4508)

These should be considered in the same category as fix tasks

chore(buildtool): Remove openstack client from buildtool. (spinnaker#…

…4433)

fix(appengine): Add gcloud path to appengine config for localdebian (s…

…pinnaker#4413) (spinnaker#4415)

Gcloud is not in the path by default for systemd services in ubuntu
18.04. In order to allow appengine to still work, pass in the path
to gcloud to the appengine provider.

fix(buildtool): Fixed python3 compatability in subprocess support

Also some lint warnings

chore(buildtool): Increase gradle socket timeouts

chore(buildtool): Increase gradle socket timeouts

fix(sponnet) Add kind attribute to Artifact (spinnaker#3741)

Artifacts are not displayed properly on Deck because
pipeline.libsonnet doesn't have 'kind' attribute in Artifact.
This PR adds 'kind' attribute to Artifact in pipeline.libsonnet.

close: spinnaker#3740