Skip magnum functional test jobs on docs changes
Skip magnum functional test jobs on docs changes

Skip magnum python27 job, python34 job, functional test jobs, and coverage jobs
on docs only changes. Jobs intended to be skipped as a result of this change
are:

* gate-magnum-python27
* gate-magnum-python34
* gate-functional-dsvm-magnum-api
* gate-functional-dsvm-magnum-k8s
* gate-functional-dsvm-magnum-swarm
* gate-functional-dsvm-magnum-mesos
* magnum-coverage

Change-Id: I7f21d2e73ac58d565dd6fadc40e5cb6c28490a8d

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