go/{mirko,statusz}: better status, kubernetes client

Change-Id: I66753a79eaf36529aee508d2b7782aab00de1498
diff --git a/bzl/workspace-status.sh b/bzl/workspace-status.sh
index dcc90c5..5450017 100755
--- a/bzl/workspace-status.sh
+++ b/bzl/workspace-status.sh
@@ -15,3 +15,6 @@
 }
 
 echo STABLE_BUILD_GERRIT-OAUTH-PROVIDER_LABEL $(rev .)
+echo STABLE_GIT_COMMIT $(git rev-parse HEAD)
+echo STABLE_GIT_VERSION $(rev .)
+echo STABLE_BUILDER $(id -un)@$(hostname -f):$(pwd)