Init Helm chart (#255)

* Initial chart version

* Add CI/CD for chart

* Fix admin creds template

* Add command, args, env, envFrom

* Render volumes and volumeMounts with tpl

* Change persistance accessMode type

* Add update strategy config

* Use custom types in docs

* Add startup probe config

* Fix web.external_url config

deploy/helm/.helmignore

@@ -0,0 +1,23 @@
+# Patterns to ignore when building packages.
+# This supports shell glob matching, relative path matching, and
+# negation (prefixed with !). Only one pattern per line.
+.DS_Store
+# Common VCS dirs
+.git/
+.gitignore
+.bzr/
+.bzrignore
+.hg/
+.hgignore
+.svn/
+# Common backup files
+*.swp
+*.bak
+*.tmp
+*.orig
+*~
+# Various IDEs
+.project
+.idea/
+*.tmproj
+.vscode/