copyright: update copyright for Apache 2.0

Update all copyright to Apache 2.0.

Signed-off-by: Paul Barrette <[email protected]>

build: remove sudo requirement from travis file

This commit updates the travis continuious integration setup to not
require a sudo access.  This will speed up linux builds as they can now
be built in a docker image, instead of requiring a full vm.

Signed-off-by: Keith Holman <[email protected]>