Not Running error should not fail haproxy_restart

Change-Id: Ia4638b68e2042877fbf495fdba0308eebaa5d7c2
Prevent neutron server from starting on installation on Ubuntu

Change-Id: I6a29599b7979211b7e54948bb9523d5134fa9b16
Closes-bug: #1263947
Merge "Not Running error should not fail haproxy_restart" into stable/4.0