[QA] Prettier Jenkins results in Gerrit

[Antoine Musso]

Hello,

The tests results being reported to Gerrit are now much nicer.  The
first ever example is https://gerrit.wikimedia.org/r/#/c/155341/


James E. Blair from Openstack found a nice trick to inject HTML in
Gerrit comment. Christian Aistleitner kindly reviewed and tested the
regex, and further improved the craziness.

Daniel Zahn deployed the change on spot a few minutes ago and we now
have slightly nicer  and more readable test results being reported.

\O/

Ref:
https://bugzilla.wikimedia.org/66095



-- 
Antoine "hashar" Musso