jenkins-yoctobuild-build: select open or enterprise integration test set
jenkins-yoctobuild-build: select open or enterprise integration test set

use release_tool to determine what tests to run.

massage arguments for both integration and backend integration tests to
filter out unwanted tests.

this is quick and dirty - pretty sure this bash could be refactored and
structured in a more appealing way, but it does the job and this bit
will be retired anyway in favor of gitlab.

changelog: none

Signed-off-by: Marcin Chalczynski <c518ef63bd173fb6889b2878cfc53cf2b95e88ef@gmail.com>

mendersoftware/meta-mender-qemu