Switch order of restoring globals and createdb.

Globals should be restored first, as createdb relies on roles being present
Signed-off-by: NChris Hajas <chajas@pivotal.io>

gpMgmt/bin/gppylib/operations/restore.py

@@ -307,14 +307,14 @@ class RestoreDatabase(Operation):
             self._restore_stats()
             return
 
-        if self.context.drop_db:
-            self._multitry_createdb()
-
         if self.context.restore_global:
             self._restore_global(self.context)
             if self.context.restore_global == "only":
                 return
 
+        if self.context.drop_db:
+            self._multitry_createdb()
+
         """
         For full restore with table filter or for the first recurssion of the incremental restore
         we first restore the schema, expand the parent partition table name's in the restore table