break up the tests so that we can maybe  run this on at least one
platform

Add tox integration to run unittests in supported python releases.
Travis-CI is used for test execution.

Additionally, the unittest TestQuotePgIdentifier was updated to support
using assert_raises_regexp on python-2.6.

Sample travis-ci output available at
https://travis-ci.org/ansible/ansible/builds/54189977

https://github.com/ansible/ansible-modules-core/issues/946

Not only match`/docker/`, but also `docker-` followed by a hex-id.

Example (shortened):
```
$ cat /proc/1/cgroup
8:blkio:/system.slice/docker-de73f4d207861cf8757b69213ee67bb234b897a18bea7385964b6ed2d515da94.scope
7:net_cls:/
```

fixed and reintroduced syncronize test, fakerunner object needed become_method to be it's default 'sudo'

Nothing we can do, when it sanitizes ssh_urls it's simply overzealous.

Was using persist_files=True when specifying the create paramater,
which breaks pipelining. Switched to use delete_remote_tmp=False instead,
which is the proper way to preserve the remove tmp dir when running
other modules from the action plugin.