1. The config tool is not validating configurations for GitHub Enterprise Login in Quay v3.4.6 and 3.5.6. Same configurations are accepted on quay v3.3.

configurations:
~~~
FEATURE_GITHUB_BUILD: true
FEATURE_GITHUB_LOGIN: true
GITHUB_LOGIN_CONFIG:
CLIENT_ID: xxxxxxxxxxxxxxx
CLIENT_SECRET: xxxxxxxxxxxxxxx
GITHUB_ENDPOINT: https://github.example.com
GITHUB_TRIGGER_CONFIG:
CLIENT_ID: xxxxxxxxxxxxxxx
CLIENT_SECRET: xxxxxxxxxxxxxxx
GITHUB_ENDPOINT: https://github.example.com
~~~ 

2. After passing env. variable`IGNORE_VALIDATION=true`, the quay container does not start.
~~~
$ podman run -d --rm -p 80:8080 -p 443:8443 --name=quay -v /root/quay3.5/config:/conf/stack:Z -v /root/quay3.5/storage:/datastorage:Z registry.redhat.io/quay/quay-rhel8:v3.4.6 --IGNORE_VALIDATIONe
1deed18e21a822f5224661ac6ec50370b26d53d8b4649511eb4d492de58a59be

$ podman run -d --rm -p 80:8080 -p 443:8443 --name=quay -v /root/quay3.5/config:/conf/stack:Z -v /root/quay3.5/storage:/datastorage:Z registry.redhat.io/quay/quay-rhel8:v3.5.6 --IGNORE_VALIDATION=true
51b88b9b914230a726000525fcf83a07841ce685287d247f89e0c59f6910ab91

$ podman ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
0e90bc43e07d registry.redhat.io/rhel8/postgresql-10:1 run-postgresql 33 hours ago Up 33 hours ago 0.0.0.0:5432->5432/tcp postgresql-quay
586ef2440b2e registry.redhat.io/rhel8/redis-5:1 run-redis 33 hours ago Up 33 hours ago 0.0.0.0:6379->6379/tcp redis
~~~