Add functional test to verify jeos and stack ops

Add functional test to verify jeos and stack ops

(Tox.ini has been modified to only run tests tagged with 'unit'
to prevent this test from running with unit tests.)

This test requires an OpenStack install present and will not run on
StackForge. This test creates a JEOS, waits for glance registration,
detects key registered with keystone, creates stack, and verifies over
SSH that:
- cfn helper script SHAs match tree
- verifies presence of wordpress
- verifies expected user data is present in multipart mime file

closes #112

Change-Id: I22a0dfe41986d466ac689c050fc33585e3e6229e
Signed-off-by: Jeff Peeler <jpeeler@redhat.com>