undo PULP_ prefix

Author: jerabekjiri

docker/etc/settings.py

@@ -21,8 +21,8 @@
 on the per environment basis. e.g: export PULP_GALAXY_....
 """
 
-X_PULP_CONTENT_HOST = os.environ.get('PULP_X_PULP_CONTENT_HOST', 'pulp-content-app')
-X_PULP_CONTENT_PORT = os.environ.get('PULP_X_PULP_CONTENT_HOST', 24816)
+X_PULP_CONTENT_HOST = os.environ.get('X_PULP_CONTENT_HOST', 'pulp-content-app')
+X_PULP_CONTENT_PORT = os.environ.get('X_PULP_CONTENT_HOST', 24816)
 
 DATABASES = {
     'default': {