phpcs jobs uses git proto and are tied

Tie the jobs to slaves labeled hasPhpcs, we better have phpcs :-]

Jobs updated:

mediawiki-core-phpcs-HEAD
mediawiki-core-phpcs-lenient
mediawiki-core-phpcs-lenient-HEAD
mediawiki-core-phpcs-strict
mediawiki-core-phpcs-strict-HEAD
mediawiki-core-regression-phpcs
mediawiki-core-regression-phpcs-HEAD
mwext-Translate-phpcs-lenient
mwext-Translate-phpcs-lenient-HEAD
mwext-Translate-phpcs-strict
mwext-Translate-phpcs-strict-HEAD

Change-Id: I796744edb640f2c414cb1251cb09f03523b340ba