Additional tests

* Added test to ensure that 24 character containers are possible
* Added helper script to build & run tests
* Added flag --skip-integration
Add tests for netlinks and fix race condition in InitPostStart.
Merge pull request #96 from mrunalp/test/netlinks

Add tests for netlinks and fix race condition in InitPostStart.
Merge pull request #95 from kraman/testing

Additional tests
Integration tests must be run with -tags integration
Merge pull request #97 from smarterclayton/make_integration_tests_flagged

Integration tests must be run with -tags integration