chore(helm): Add secret config for GitHub auth

Author: nellh

helm/openneuro/Chart.yaml

@@ -1,6 +1,6 @@
 apiVersion: v1
 name: openneuro
-version: 1.3.0
+version: 1.4.0
 description: OpenNeuro production deployment chart
 home: https://openneuro.org
 sources:

helm/openneuro/templates/secret.yaml

@@ -13,6 +13,10 @@ stringData:
   ORCID_CLIENT_SECRET: {{ .Values.secrets.auth.ORCID_CLIENT_SECRET | quote }}
   ORCID_API_ENDPOINT: {{ .Values.secrets.auth.ORCID_API_ENDPOINT | quote }}
 {{- end }}
+{{- if .Values.secrets.auth.GITHUB_CLIENT_SECRET }}
+  GITHUB_CLIENT_ID: {{ .Values.secrets.auth.GITHUB_CLIENT_ID | quote }}
+  GITHUB_CLIENT_SECRET: {{ .Values.secrets.auth.GITHUB_CLIENT_SECRET | quote }}
+{{- end }}
 {{- if .Values.secrets.auth.GLOBUS_CLIENT_SECRET }}
   GLOBUS_CLIENT_ID: {{ .Values.secrets.auth.GLOBUS_CLIENT_ID | quote }}
   GLOBUS_CLIENT_SECRET: {{ .Values.secrets.auth.GLOBUS_CLIENT_SECRET | quote }}