Fixing key value duplication race condition in postgres (#13753)

Automatic Merge

store/sqlstore/plugin_store.go

@@ -63,7 +63,7 @@ func (ps SqlPluginStore) SaveOrUpdate(kv *model.PluginKeyValue) (*model.PluginKe
 				// If the error is from unique constraints violation, it's the result of a
 				// valid race and we can report success. Otherwise we have a real error and
 				// need to return it
-				if !IsUniqueConstraintError(err, []string{"PRIMARY", "PluginId", "Key", "PKey"}) {
+				if !IsUniqueConstraintError(err, []string{"PRIMARY", "PluginId", "Key", "PKey", "pkey"}) {
 					return nil, model.NewAppError("SqlPluginStore.SaveOrUpdate", "store.sql_plugin_store.save.app_error", nil, err.Error(), http.StatusInternalServerError)
 				}
 			}
@@ -93,7 +93,7 @@ func (ps SqlPluginStore) CompareAndSet(kv *model.PluginKeyValue, oldValue []byte
 			// If the error is from unique constraints violation, it's the result of a
 			// race condition, return false and no error. Otherwise we have a real error and
 			// need to return it.
-			if IsUniqueConstraintError(err, []string{"PRIMARY", "PluginId", "Key", "PKey"}) {
+			if IsUniqueConstraintError(err, []string{"PRIMARY", "PluginId", "Key", "PKey", "pkey"}) {
 				return false, nil
 			} else {
 				return false, model.NewAppError("SqlPluginStore.CompareAndSet", "store.sql_plugin_store.save.app_error", nil, err.Error(), http.StatusInternalServerError)