Tidy up IssuesFinder specs
Tidy up IssuesFinder specs

- Don't do setup in spec bodies.
- Don't `describe` a symbol.
- Don't use 'should'.

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