Fix hacking.py to handle parenthesise in from import as
Fix hacking.py to handle parenthesise in from import as

Fix bug 1133070

Support 'from os import (path as p)'

Change-Id: Ie2e5b3150efb6f47b16978f3de64fca37e1717a6

hyakuhei/cleantox,zancas/hacking,hyakuhei/cleantox,zancas/hacking,openstack-dev/hacking,emonty/oslo-hacking,openstack-dev/hacking,emonty/oslo-hacking