The github provider was doing a very naive check for whether a PR was
able to be merged, simply checking if there was a current merge
conflict. We also want to make sure that if there are any branch
protection requirements these are also checked because if zuul tries to
merge a patch via github that doesn't meet the branch protection it will
be rejected and cause zuul to report a failure to users.
Change-Id: I66d54c2603c462cb029510dd4e37fc89afeb200d
Signed-off-by: Jamie Lennox <jamielennox@gmail.com>
Co-authored-by: Tobias Henkel <tobias.henkel@bmw.de>
Tobias Henkel