Resolve "Gitlab upgrade to 13.10.3"

Summary

1. upgrade Gitlab to chart version 4.10.3 app version 13.10.3
2. fix monitoring.enabled passthrough
3. Also, update synker image for gitlab-runner-helper. (this is unrelated to the Gitlab upgrade)

Closes #280 (closed)

chart/values.yaml

@@ -453,7 +453,7 @@ addons:
     git:
       repo: https://repo1.dso.mil/platform-one/big-bang/apps/developer-tools/gitlab-runner.git
       path: "./chart"
-      tag: "0.26.0-bb.0"
+      tag: "0.26.0-bb.1"
 
     # -- Values to passthrough to the gitlab runner chart: https://repo1.dso.mil/platform-one/big-bang/apps/developer-tools/gitlab-runner.git
     values: {}