Fix save state error, don't save swift Mysql db.

Change-Id: If19a63e332a5d6c6e661d06506ad2087c6248d5c
Fix: getting the right screen name in stop-base

There was missing piece from review
https://review.openstack.org/#/c/28637/
Fixing it here. Sleep is added to guarantee the services
are terminated.

Blueprint: blueprint/nightly-upgrade-testing

Change-Id: I71d35ea28410ce6756850fb5e07357712a6a792c
cleanup: change to default ubuntu package service

Change from aptitute to apt-get when removing
ubuntu packages on grenade cleanup

Blueprint: blueprint/nightly-upgrade-testing

Change-Id: I2b50c25d731f84872bbdc82a2237b98d0682b062
Merge "cleanup: change to default ubuntu package service"
Merge "Fix: getting the right screen name in stop-base"