test(dropdown): use openClass constant
test(dropdown): use openClass constant

Changing the value of dropdownConfig.openClass should not break the unit tests

Closes #3529

obivandamme/bootstrap,mikesavior/bootstrap,imskojs/bootstrap,techkrish/bootstrap,sullivanpt/bootstrap,nlwillia/bootstrap,benhalverson/bootstrap,parikmaher534/bootstrap,pireerliu/bootstrap,inukshuk/bootstrap,daviesgeek/bootstrap,leyanlo/bootstrap,connyay/bootstrap,stanzi83/bootstrap,bikegriffith/bootstrap,nathan-j-brenner/bootstrap-1,Gailby/bootstrap,realityking/ui-bootstrap,buchslava/bootstrap,benhalverson/bootstrap,Den-dp/bootstrap,irwinlove/bootstrap-1,thalen/bootstrap,MetSystem/bootstrap,oliversalzburg/bootstrap,yubin-huang/bootstrap,ccslakey/bootstrap,rhamid/bootstrap-1,KingMario/bootstrap-1,folsom-labs/bootstrap,LogicState/bootstrap,infowrap/bootstrap,saputro-dwy/bootstrap,pdsoftplan/bootstrap,fernando-sendMail/bootstrap,carlosjunior/bootstrap,yonglehou/bootstrap-1,yong1236/angular-ui-bootstrap,madhudskumar/bootstrap,fmccown/bootstrap,justin-john/bootstrap-1,SatvikPurohit/bootstrap,Emobe/bootstrap,mufl1h/bootstrap,pbrewer/bootstrap,AlexFine/bootstrap,miiihi/bootstrap,guaerguagua/bootstrap,hyoda/bootstrap,gbasto/bootstrap,kmccaw/bootstrap,VoltiSubito/bootstrap,bqevin/bootstrap-1,krossoverintelligence/bootstrap,yukisan/bootstrap,Nekle/bootstrap,Emobe/bootstrap,nicklv/bootstrap,fabg21/bootstrap,softgrad-dev2/angular_demo,filipkis/bootstrap,finkcloud/bootstrap,gfaceless/bootstrap,guaerguagua/bootstrap,karelcallens/bootstrap,jordangraft/bootstrap,linuxvom/bootstrap,bikegriffith/bootstrap,rainlake/bootstrap,mykhaylo-/bootstrap,Marwzoor/bootstrap,atulc007/bootstrap-1,jordangraft/bootstrap,codedogfish/angular-ui-bootstrap,DenisCloutier/bootstrap,DiHuang1986/bootstrap,inukshuk/bootstrap,RobJacobs/bootstrap,rgolea/bootstrap,qrohlf/bootstrap,andreialecu/bootstrap,universsky/bootstrap-1,karelcallens/bootstrap,kemapak/bootstrap,icfantv/bootstrap,jaydiablo/bootstrap,qpitlove/bootstrap,Lexxville/bootstrap-1,parikmaher534/bootstrap,vfiles/bootstrap,ksheedlo/bootstrap,gbasto/bootstrap,RobJacobs/bootstrap,zepheiryan/bootstrap,nathan-j-brenner/bootstrap-1,reinisp/bootstrap,ksheedlo/bootstrap,mikesavior/bootstrap,MikhailNazarov/bootstrap,deeg/bootstrap,cgat/bootstrap,liiza/bootstrap,davincho/bootstrap,Gailby/bootstrap,tmcgee123/bootstrap,qpitlove/bootstrap,voyagecontrol/bootstrap,mabi/bootstrap,rajesh-frontendengineer/bootstrap-1,infowrap/bootstrap,mabi/bootstrap,WXwangxin/bootstrap,wuhoujun/bootstrap,Vreasy/bootstrap,VoltiSubito/bootstrap,drocbuster/My_AngularJS_Repo,xzoth/bootstrap,mohuk/bootstrap,alokpradhan/bootstrap,shadowdaw/bootstrap,sullivanpt/bootstrap,maoli1110/bootstrap,birdy-/bootstrap,ccslakey/bootstrap,292388900/bootstrap,gorork/bootstrap,BookingBug/bootstrap,AlexFine/bootstrap,pkdevbox/angular-ui-bootstrap,shihang0001/bootstrap,deeg/bootstrap,ljantzen/bootstrap,angular-ui/bootstrap,liqingzhu/bootstrap,DiHuang1986/bootstrap,dgoncalves1/bootstrap,matteopic/bootstrap,themifycloud/bootstrap,irwinlove/bootstrap-1,rgolea/bootstrap,Lincoln-xzc/angular-ui-bootstrap,franzherzog/bootstrap,dsisejkovic/bootstrap,Foxandxss/bootstrap,elijah513/bootstrap,MetSystem/bootstrap,noellejung/bootstrap,Servoy/bootstrap,martin-brennan-csnet/bootstrap,dmc2015/bootstrap,teng2015/bootstrap,Schibum/bootstrap,universsky/bootstrap-1,imskojs/bootstrap,shadowdaw/bootstrap,wuwei111467/bootstrap,davious/angular-ui-bootstrap,reiniergs/bootstrap,SatvikPurohit/bootstrap,linuxb/bootstrap,ehteshamkafeel/bootstrap,filso/bootstrap,cgvarela/bootstrap-1,succ1984/bootstrap,inoxis91/bootstrap,qrohlf/bootstrap,bleggett/bootstrap,davereed/bootstrap,burlhock/bootstrap,pmalikbtech/bootstrap,finkcloud/bootstrap,elijah513/bootstrap,minzen/bootstrap,pkdevbox/bootstrap-1,DenisCloutier/bootstrap,shootermv/bootstrap,pkdevbox/angular-ui-bootstrap,icfantv/bootstrap,suryasingh/bootstrap,rodrigues-daniel/bootstrap,nobitagit/bootstrap,2363140194/bootstrap,cesarmarinhorj/AngularJS-bootstrap,birdy-/bootstrap,vsternbach/bootstrap,GirishKumrawat/bootstrap,rajesh-frontendengineer/bootstrap-1,kemapak/bootstrap,TORO-IO/bootstrap-1,Bugagazavr/bootstrap,rodrigues-daniel/bootstrap,xiwc/bootstrap-1,kmccaw/bootstrap,filso/bootstrap,yong1236/angular-ui-bootstrap,Den-dp/bootstrap,suryasingh/bootstrap,thomassorensen/bootstrap,fjg1989/bootstrap,reinisp/bootstrap,drocbuster/My_AngularJS_Repo,kongx73/bootstrap,Zazulei/bootstrap,kirning/bootstrap-1,hyoda/bootstrap,daviesgeek/bootstrap,atulc007/bootstrap-1,sandeepkaturi/report-manage-of-bootstrap,guaido79/bootstrap,ljantzen/bootstrap,buchslava/bootstrap,byronigoe/bootstrap,ChinnasamyM/bootstrap,akinsony/bootstrap,connyay/bootstrap,zhaokunfay/bootstrap,leyanlo/bootstrap,thomassorensen/bootstrap,vsternbach/bootstrap,elancom/bootstrap-1,pkdevbox/bootstrap-1,reiniergs/bootstrap,yjukaku/bootstrap,cdrewery/bootstrap,carlosjunior/bootstrap,nicklv/bootstrap,woshiyigebing/bootstrap,JonFerrera/ui-bootstrap,sandeepkaturi/report-manage-of-bootstrap,eftakharali/bootstrap,stereocilia/bootstrap,spadgett/bootstrap,rasulnz/bootstrap,dabos-GFI/angular-ui-bootstrap,jaydiablo/bootstrap,rasulnz/bootstrap,cdrewery/bootstrap,shootermv/bootstrap,yjukaku/bootstrap,noellejung/bootstrap,stereocilia/bootstrap,LogicState/bootstrap,themifycloud/bootstrap,BookingBug/bootstrap,fernando-sendMail/bootstrap,Lalem001/angular-ui-bootstrap,davincho/bootstrap,ChinnasamyM/bootstrap,Kpler/bootstrap,SystemDisc/bootstrap,shiftagent/ui-bootstrap,justin-john/bootstrap-1,kirning/bootstrap-1,josheche/bootstrap-1,SimilarWeb/bootstrap,Crunch-io/bootstrap,Regencyop/bootstrap,succ1984/bootstrap,tmcgee123/bootstrap,franzherzog/bootstrap,jackRogers/bootstrap,wesleycho/bootstrap,JonFerrera/ui-bootstrap,nlwillia/bootstrap,fpipita/bootstrap,woshiyigebing/bootstrap,jczerwinski/bootstrap-1,filipkis/bootstrap,freejavaster/bootstrap,2363140194/bootstrap,pireerliu/bootstrap,mykhaylo-/bootstrap,chrisirhc/angular-ui-bootstrap,zhaokunfay/bootstrap,davious/angular-ui-bootstrap,akinsony/bootstrap,eduncan26/bootstrap,matteopic/bootstrap,WXwangxin/bootstrap,wuhoujun/bootstrap,looker/bootstrap,mohuk/bootstrap,miiihi/bootstrap,linuxvom/bootstrap,mufl1h/bootstrap,edivancamargo/bootstrap,JonathanGawrych/bootstrap,rhamid/bootstrap-1,techkrish/bootstrap,Regencyop/bootstrap,andrepitombeira/bootstrap,Marwzoor/bootstrap,gorork/bootstrap,liqingzhu/bootstrap,292388900/bootstrap,eftakharali/bootstrap,caoruiy/bootstrap,dgoncalves1/bootstrap,Anirudhk94/bootstrap,martin-brennan-csnet/bootstrap,angular-ui/bootstrap,Anirudhk94/bootstrap,dsisejkovic/bootstrap,JDeuker/bootstrap,iamcbh/bootstrap,cesarmarinhorj/AngularJS-bootstrap,lancerushing/bootstrap,vlajos/bootstrap,freejavaster/bootstrap,xiwc/bootstrap-1,fmccown/bootstrap,Jchavez/bootstrap-1,zepheiryan/bootstrap,Servoy/bootstrap,fjg1989/bootstrap,fabg21/bootstrap,jczerwinski/bootstrap-1,wuwei111467/bootstrap,Lexxville/bootstrap-1,obivandamme/bootstrap,yangcwGIT/bootstrap,Zazulei/bootstrap,inoxis91/bootstrap,Bugagazavr/bootstrap,nobitagit/bootstrap,Crunch-io/bootstrap,andreialecu/bootstrap,Kpler/bootstrap,Lalem001/angular-ui-bootstrap,fpipita/bootstrap,ThePenguin1140/semantic-angular,Lohann/bootstrap,ehteshamkafeel/bootstrap,madhudskumar/bootstrap,christor/bootstrap,xzoth/bootstrap,netanelgilad/bootstrap-1,minzen/bootstrap,SandeepSikhakolli/bootstrap,josheche/bootstrap-1,tobigun/bootstrap,KingMario/bootstrap-1,ahsanbagwan/bootstrap,SimilarWeb/bootstrap,Xephi/bootstrap,gato-gordo/bootstrap,folsom-labs/bootstrap,lancerushing/bootstrap,yubin-huang/bootstrap,voyagecontrol/bootstrap,burlhock/bootstrap,corystevens/bootstrap,wesleycho/bootstrap,pmalikbtech/bootstrap,liiza/bootstrap,guaido79/bootstrap,caoruiy/bootstrap,chrisirhc/angular-ui-bootstrap,thalen/bootstrap,eduncan26/bootstrap,cgvarela/bootstrap-1,Xephi/bootstrap,bleggett/bootstrap,azahreba/bootstrap,looker/bootstrap,realityking/ui-bootstrap,softgrad-dev2/angular_demo,tobigun/bootstrap,netanelgilad/bootstrap-1,JonathanGawrych/bootstrap,spadgett/bootstrap,Vreasy/bootstrap,byronigoe/bootstrap,TORO-IO/bootstrap-1,GirishKumrawat/bootstrap,maoli1110/bootstrap,christor/bootstrap,andrepitombeira/bootstrap,SandeepSikhakolli/bootstrap,azahreba/bootstrap,Lohann/bootstrap,jackRogers/bootstrap,oliversalzburg/bootstrap,vlajos/bootstrap,ThePenguin1140/semantic-angular,shihang0001/bootstrap,yangcwGIT/bootstrap,Farael49/bootstrap,bqevin/bootstrap-1,edivancamargo/bootstrap,Jchavez/bootstrap-1,saputro-dwy/bootstrap,gato-gordo/bootstrap,Lincoln-xzc/angular-ui-bootstrap,ahsanbagwan/bootstrap,bsiddiqui/bootstrap,pbrewer/bootstrap,Farael49/bootstrap,codedogfish/angular-ui-bootstrap,hxtpoe/bootstrap,hxtpoe/bootstrap,vfiles/bootstrap,shiftagent/ui-bootstrap,yukisan/bootstrap,cgat/bootstrap,JDeuker/bootstrap,davereed/bootstrap,MikhailNazarov/bootstrap,krossoverintelligence/bootstrap,dmc2015/bootstrap,benhalverson/bootstrap,alokpradhan/bootstrap,Nekle/bootstrap,pdsoftplan/bootstrap,bsiddiqui/bootstrap,Foxandxss/bootstrap,linuxb/bootstrap,kongx73/bootstrap,Schibum/bootstrap,teng2015/bootstrap,rainlake/bootstrap,stanzi83/bootstrap,gfaceless/bootstrap,yonglehou/bootstrap-1,dabos-GFI/angular-ui-bootstrap,elancom/bootstrap-1,iamcbh/bootstrap,benhalverson/bootstrap,SystemDisc/bootstrap,corystevens/bootstrap