Add abiltity to skip tests in testrtc by using a "?test_filter=TestA,TestB".
Add abiltity to skip tests in testrtc by using a "?test_filter=TestA,TestB".

Tested: locally with "python -m SimpleHttpServer" with no parameters and
with parameters "?test_filter=MicrophoneTest".

fetterov/samples,shaohung001/samples,guoweis/webrtc,jjrasche/cell-based-RC-control,TribeMedia/apprtc,procandi/samples,taylor-b/samples,webrtc/adapter,bpyoung92/apprtc,smbale/samples,MahmoudFouad/samples,jiayliu/apprtc,jarl-alejandro/apprtc,tsruban/samples,shines/adapter,Acidburn0zzz/adapter,YouthAndra/apprtc,dengshaodong/docker-apprtc,ralic/testrtc,kosmosby/Google-WebRTC-Samples,dajise/samples,virajs/apprtc,virajs/apprtc,82488059/apprtc,shelsonjava/testrtc,mauricionr/samples,virajs/testrtc,shelsonjava/apprtc,jan-ivar/samples,JiYou/apprtc,bemasc/samples,webrtc/apprtc,jan-ivar/adapter,harme199497/adapter,aadebuger/docker-apprtc,harme199497/adapter,TribeMedia/apprtc,dushmis/webrtc,jjrasche/cell-based-RC-control,overtakermtg/samples,b-cuts/samples,arnauorriols/apprtc,ralic/samples,smbale/samples,YouthAndra/apprtc,82488059/apprtc,TribeMedia/testrtc,volkanh/volkanh.github.io,Roarz/samples,bbandaru/samples,bemasc/samples,TribeMedia/testrtc,smadhusu/AppRTC,volkanh/volkanh.github.io,procandi/apprtc,webrtc/apprtc,jjrasche/cell-based-RC-control,dengshaodong/docker-apprtc,virajs/apprtc,todotobe1/apprtc,askdaddy/samples,todotobe1/samples,leehz/samples,smayoorans/samples,fetterov/samples,leehz/samples,Zauberstuhl/adapter,shines/adapter,TribeMedia/samples,mvenkatesh431/apprtc,dushmis/webrtc,pquochoang/samples,virajs/testrtc,mvenkatesh431/apprtc,shelsonjava/samples,procandi/apprtc,TheKnarf/apprtc,samdutton/webrtc,Temasys/Google-WebRTC-Samples,Zauberstuhl/adapter,xdumaine/samples,todotobe1/apprtc,TheKnarf/apprtc,dajise/samples,smayoorans/samples,jessetane/testrtc,virajs/apprtc,jarl-alejandro/apprtc,virajs/samples,volkanh/volkanh.github.io,webrtc/apprtc,jiayliu/apprtc,mvenkatesh431/samples,todotobe1/apprtc,MahmoudFouad/samples,82488059/apprtc,xdumaine/adapter,keshwans/samples,virajs/samples,ralic/samples,todotobe1/apprtc,juberti/samples,shines/adapter,ralic/testrtc,fetterov/samples,Edward-Shawn/samples,Zauberstuhl/adapter,Roarz/samples,fitraditya/samples,myself659/samples,keshwans/samples,TheKnarf/apprtc,TheKnarf/apprtc,bpyoung92/apprtc,procandi/apprtc,fippo/apprtc,kod3r/samples,jiayliu/apprtc,mvenkatesh431/apprtc,TribeMedia/apprtc,shelsonjava/apprtc,myself659/samples,webrtc/apprtc,knightsofaa/webrtc,oliverhuangchao/samples,procandi/apprtc,arnauorriols/apprtc,martin7890/samples,shelsonjava/testrtc,leehz/samples,webrtc/testrtc,TribeMedia/samples,YouthAndra/apprtc,jiayliu/apprtc,mauricionr/samples,todotobe1/samples,diddie06/webrtc,guoweis/webrtc,todotobe1/apprtc,4lejandrito/adapter,kod3r/samples,jan-ivar/samples,smbale/samples,webrtc/samples,mvenkatesh431/samples,procandi/apprtc,todotobe1/samples,webrtc/testrtc,Temasys/Google-WebRTC-Samples,82488059/apprtc,webrtc/samples,fitraditya/samples,Roarz/samples,TribeMedia/apprtc,samdutton/apprtc,mulyoved/samples,EmreAkkoyun/sample,smadhusu/AppRTC,aadebuger/docker-apprtc,shelsonjava/samples,ralic/testrtc,fitraditya/samples,fippo/apprtc,dengshaodong/docker-apprtc,akashrchoksi/newone,jiayliu/apprtc,shelsonjava/testrtc,4lejandrito/adapter,mvenkatesh431/apprtc,xdumaine/samples,bemasc/samples,jarl-alejandro/apprtc,pquochoang/samples,TribeMedia/apprtc,dengshaodong/docker-apprtc,JiYou/apprtc,arnauorriols/apprtc,overtakermtg/samples,martin7890/samples,bpyoung92/apprtc,jessetane/testrtc,bpyoung92/apprtc,samdutton/apprtc,myself659/samples,martin7890/samples,knightsofaa/webrtc,akashrchoksi/newone,shaohung001/samples,jarl-alejandro/apprtc,ralic/samples,4lejandrito/adapter,EmreAkkoyun/sample,ralic/testrtc,82488059/apprtc,dajise/samples,samdutton/webrtc,jessetane/testrtc,samdutton/apprtc,kod3r/samples,aadebuger/docker-apprtc,calebboyd/adapter,smadhusu/AppRTC,samdutton/apprtc,MahmoudFouad/samples,smadhusu/AppRTC,calebboyd/adapter,juberti/samples,mulyoved/samples,shelsonjava/apprtc,samdutton/apprtc,virajs/testrtc,mvenkatesh431/samples,dengshaodong/docker-apprtc,mvenkatesh431/apprtc,shelsonjava/samples,shelsonjava/apprtc,virajs/testrtc,fippo/apprtc,bpyoung92/apprtc,bbandaru/samples,procandi/samples,tsruban/samples,fippo/webrtc,jjrasche/cell-based-RC-control,tsruban/samples,fippo/apprtc,askdaddy/samples,mulyoved/samples,Acidburn0zzz/adapter,arnauorriols/apprtc,fippo/apprtc,oliverhuangchao/samples,calebboyd/adapter,shelsonjava/apprtc,b-cuts/samples,webrtc/apprtc,b-cuts/samples,fippo/webrtc,aadebuger/docker-apprtc,JiYou/apprtc,harme199497/adapter,jan-ivar/adapter,virajs/samples,JiYou/apprtc,TheKnarf/apprtc,diddie06/webrtc,taylor-b/samples,shelsonjava/testrtc,Edward-Shawn/samples,TribeMedia/samples,smayoorans/samples,arnauorriols/apprtc,bbandaru/samples,aadebuger/docker-apprtc,webrtc/adapter,overtakermtg/samples,Acidburn0zzz/adapter,EmreAkkoyun/sample,guoweis/webrtc,akashrchoksi/newone,TribeMedia/testrtc,YouthAndra/apprtc,jessetane/testrtc,mauricionr/samples,TribeMedia/testrtc,Edward-Shawn/samples,oliverhuangchao/samples,xdumaine/samples,pquochoang/samples,jarl-alejandro/apprtc,xdumaine/adapter,smadhusu/AppRTC,JiYou/apprtc,YouthAndra/apprtc,virajs/apprtc,procandi/samples