Parametrize keycloak admin user in templates

[siamaksade]

The KeyCloak admin user and password is hard-coded to admin in the templates:
https://github.com/eclipse/che/tree/master/deploy/openshift/templates

They should become template parameters.

[ghost]

@siamaksade they are hardcoded but in jsons here - https://github.com/eclipse/che/tree/master/dockerfiles/init/modules/keycloak/templates

Env variables are ignored in this case. I'll issue a PR to fix it. Thanks for the pointer.

[siamaksade]

Slight relevant to this, the CHE_KEYCLOAK_ADMIN_REQUIRE_UPDATE_PASSWORD template param should only be in the keycloak template. It's not used in Che template

[ghost]

@siamaksade it is not use din Che template. Not sure I understand your comment.

[ghost]

Closing this issue as the original request was addressed in a merged PR. @siamaksade feel free to open a separate issue related to your another concern.