Support for Github Org

[ItsMattL]

I can find no way to configure the ATLANTIS_GH_ORG / --gh-org feature via the Helm chart. Is it missing, and if so can it be added?

[GMartinez-Sisti]

Hi @ItsMattL, we have a reference for org hostname, so it would make sense to add it in this map:

helm-charts/charts/atlantis/values.yaml

Lines 27 to 36 in c2ca3e3

	# -- If using GitHub, please enter your values as follows.
	# The chart will perform the base64 encoding for values that are stored in secrets.
	# The 'hostname' key is exclusive to GitHub Enterprise installations.
	# Check values.yaml for examples.
	github: {}
	# github:
	# user: foo
	# token: bar
	# secret: baz
	# hostname: github.your.org

And then use something like this to include it?

helm-charts/charts/atlantis/templates/statefulset.yaml

Lines 364 to 367 in c2ca3e3

	{{- if .Values.github.hostname }}
	- name: ATLANTIS_GH_HOSTNAME
	value: {{ .Values.github.hostname }}
	{{- end }}

Are you able to send a PR for this?