Extend comment for migrations helper MySQL fix
Extend comment for migrations helper MySQL fix

dreampet/gitlab,axilleas/gitlabhq,dplarson/gitlabhq,iiet/iiet-git,stoplightio/gitlabhq,Soullivaneuh/gitlabhq,darkrasid/gitlabhq,htve/GitlabForChinese,screenpages/gitlabhq,LUMC/gitlabhq,SVArago/gitlabhq,axilleas/gitlabhq,LUMC/gitlabhq,mr-dxdy/gitlabhq,Soullivaneuh/gitlabhq,screenpages/gitlabhq,stoplightio/gitlabhq,allysonbarros/gitlabhq,dreampet/gitlab,mr-dxdy/gitlabhq,stoplightio/gitlabhq,mmkassem/gitlabhq,dplarson/gitlabhq,iiet/iiet-git,jirutka/gitlabhq,icedwater/gitlabhq,dreampet/gitlab,openwide-java/gitlabhq,dreampet/gitlab,shinexiao/gitlabhq,axilleas/gitlabhq,htve/GitlabForChinese,daiyu/gitlab-zh,daiyu/gitlab-zh,mr-dxdy/gitlabhq,openwide-java/gitlabhq,openwide-java/gitlabhq,martijnvermaat/gitlabhq,daiyu/gitlab-zh,mmkassem/gitlabhq,Soullivaneuh/gitlabhq,htve/GitlabForChinese,t-zuehlsdorff/gitlabhq,darkrasid/gitlabhq,daiyu/gitlab-zh,darkrasid/gitlabhq,t-zuehlsdorff/gitlabhq,screenpages/gitlabhq,SVArago/gitlabhq,SVArago/gitlabhq,shinexiao/gitlabhq,htve/GitlabForChinese,LUMC/gitlabhq,t-zuehlsdorff/gitlabhq,martijnvermaat/gitlabhq,allysonbarros/gitlabhq,SVArago/gitlabhq,icedwater/gitlabhq,jirutka/gitlabhq,mmkassem/gitlabhq,screenpages/gitlabhq,stoplightio/gitlabhq,shinexiao/gitlabhq,mr-dxdy/gitlabhq,mmkassem/gitlabhq,martijnvermaat/gitlabhq,shinexiao/gitlabhq,icedwater/gitlabhq,jirutka/gitlabhq,dplarson/gitlabhq,darkrasid/gitlabhq,iiet/iiet-git,axilleas/gitlabhq,iiet/iiet-git,icedwater/gitlabhq,t-zuehlsdorff/gitlabhq,allysonbarros/gitlabhq,allysonbarros/gitlabhq,openwide-java/gitlabhq,martijnvermaat/gitlabhq,jirutka/gitlabhq,LUMC/gitlabhq,Soullivaneuh/gitlabhq,dplarson/gitlabhq