tree 5c26f7c8469545c56dfa7f541a0c533606446515
parent ca40dc85f1857b131c6f24574f7133e740d38c89
author zhufl <zhu.fanglei@zte.com.cn> 1473324945 +0800
committer zhufl <zhu.fanglei@zte.com.cn> 1473324945 +0800

Use api_extensions to decide security_group type nova used

Even the system enables neutron, if neutron's security_group
extension is disabled, Nova can still use nova's security_group
by setting security_group_api=nova in nova.conf. So this is to
use neutron's security group only when neutron is enabled and
neutron's security_group extension is enabled.

Change-Id: Id23fdb8cd47fb0ecf0ad0b055dcbb423ff23a239