Merge pull request #480 from edly-io/alisalman/badgr-fixes

fix: update auth parameters for badgr

lms/djangoapps/badges/backends/badgr.py

@@ -236,6 +236,8 @@ def _get_and_cache_oauth_tokens(self, refresh_token=None):
         data = {
             'username': settings.BADGR_USERNAME,
             'password': settings.BADGR_PASSWORD,
+            'grant_type': 'password',
+            'client_id': 'public'
         }
         if refresh_token:
             data = {