Merge pull request #330 from mansam/catch-bad-requests-during-refresh

Catch Bad Request responses in safe_call
(cherry picked from commit 9bc4293ee16e8977450b3002f5fd383129e3f1cc)

Fixes https://bugzilla.redhat.com/show_bug.cgi?id=1613758

app/models/manageiq/providers/openstack/refresh_parser_common/helper_methods.rb

@@ -49,6 +49,11 @@ def safe_call
           _log.warn "Not Found response code returned in provider: #{@os_handle.address}. Message=#{err.message}"
           _log.warn err.backtrace.join("\n")
           nil
+        rescue Excon::Errors::BadRequest => err
+          # This can happen if stack resources are missing, among other reasons. In such a case log a warning but continue the refresh.
+          _log.warn "Bad Request response code returned in provider: #{@os_handle.address}. Message=#{err.message}"
+          _log.warn err.backtrace.join("\n")
+          nil
         end
 
         alias safe_get safe_call