Integrate Travis
Integrate Travis

We can't rely on the OpenStack gate and zuul anymore, so fall back to
the next best thing.

Change-Id: Iaf4f05e946dbcdc1b04f0c5c48d7f087d7583c1c
Signed-off-by: Stephen Finucane <06fa905d7f2aaced6dc72e9511c71a2a51e8aead@that.guru>

openstack/doc8,stackforge/doc8