Convert linters+bashate to use ubuntu-trusty
Convert linters+bashate to use ubuntu-trusty

Switch over jobs to use ubuntu-trusty instead of bare-trusty.

Change-Id: I6310f99b4d0920c8267407acb9cd6b68a0f163db

openstack-infra/project-config,Tesora/tesora-project-config,dongwenjuan/project-config,dongwenjuan/project-config,openstack-infra/project-config,Tesora/tesora-project-config,noorul/os-project-config,noorul/os-project-config