Port CI to GitHub actions

* Added ipaddress and arping dependencies

- Added PIP_DEPS to add other pip dependencies to the builder
- Added ipaddress pip dependency
- Added arping command

* Moved pip install

* Minimize image size by using 2 stage build

* Remove redundant BMv2 config flag

* First attempt to use Travis to build and deploy images

Deploy step is still missing

* Fix script section

* Fix script section, again

* One more time, still learning Travis YML syntax...

* Push images to docker hub when verifying master branch

* Enclose env var in single quotes

* Add missing PI configure flags

* Minor change to Dockerfile

* Use commit sha from bmv2 and PI repos to avoid stale caching

Configure BMv2 with logging macros enabled