Add support for OAuth2 scope parameter (#199)

* Add support for OAuth2 scope parameter

* Add description for OAuth2 scope parameter

* Update docs with OAuth2 scope parameter

* Make request params None if no scope

kube_ops_view/main.py

@@ -34,6 +34,7 @@ logger = logging.getLogger(__name__)
 SERVER_STATUS = {'shutdown': False}
 AUTHORIZE_URL = os.getenv('AUTHORIZE_URL')
 APP_URL = os.getenv('APP_URL')
+SCOPE = os.getenv('SCOPE')
 
 app = Flask(__name__)
 
@@ -45,7 +46,8 @@ auth = OAuthRemoteAppWithRefresh(
     request_token_url=None,
     access_token_method='POST',
     access_token_url=os.getenv('ACCESS_TOKEN_URL'),
-    authorize_url=AUTHORIZE_URL
+    authorize_url=AUTHORIZE_URL,
+    request_token_params={'scope': SCOPE} if SCOPE else None
 )
 oauth.remote_apps['auth'] = auth