Let's ensure we're not relying, on any of the called workflows, on event
specific information.
Right now, the two information we've been relying on are:
* PR number, coming from github.event.pull_request.number
* Commit hash, coming from github.event.pull_request.head.sha
As we want to, in the future, add nightly jobs, which will be triggered
by a different event (thus, having different fields populated), we
should ensure that those are not used unless it's in the "top action"
that's trigerred by the event.
Signed-off-by: Fabiano Fidêncio <fabiano.fidencio@intel.com>
cc3993d860