Allow to configure ssl on keystone apache site

This patch allows to configure ssl settings on keystone apache
site by specifying apache_keystone_ssl parameter.
Also allow to override host:name by setting apache_keystone_api_host

Fully backward compatible change.

Change-Id: I8cde4c16b808370761965d291b17136b1e144a9b
Related-Prod: PROD-17057
1 file changed