Sync stable-2.5 test infrastructure with devel: - shippable.yml - test/runner/ - test/sanity/ - test/utils/ - docs/docsite/rst/dev_guide/testing/sanity/ - test/integration/targets/*/aliases
* IP address pool module and integration tests * Examples corrected and imports moved to beginning of module. * Revert ucsmsdk import lines to avoid import sanity test failures. * Add comment around imports for ucsmsdk.