Changed user to run mongo for admin
Merge pull request #147 from perrito666/1332110_restore_broken_with_mongo_refactor

Fix bug #1332110 :restore fails on hp and aws

After a change on how permissions are handled for users (240db2a2), the one executing mongo queries on the restore process became unable to run them. This operations seems to lack a permission failure.
The operation is now run, as others already where, as admin user.