Add an additional description for 'token_ttl'
Add an additional description for 'token_ttl'

The unit of 'token_ttl' is not clear
in the help text in nova/conf/consoleauth.py.
So add the unit (in seconds) in the help text.

TrivialFix
Change-Id: Id6506b7462c303223bac8586e664e187cb52abd6

gooddata/openstack-nova,mahak/nova,mahak/nova,openstack/nova,mahak/nova,klmitch/nova,rahulunair/nova,mikalstill/nova,klmitch/nova,phenoxim/nova,mikalstill/nova,klmitch/nova,openstack/nova,gooddata/openstack-nova,mikalstill/nova,klmitch/nova,openstack/nova,gooddata/openstack-nova,rahulunair/nova,gooddata/openstack-nova,rahulunair/nova,phenoxim/nova