Added args example in explicit loop testing docs (#1098)
Added args example in explicit loop testing docs (#1098)

Before only loop was being passed to the constructor example.
If the service required args, the example would fail. With the new example,
any args and kwargs received from the calling service will be passed
correctly to the tested service
arthurdarcet/aiohttp,KeepSafe/aiohttp,AraHaanOrg/aiohttp,z2v/aiohttp,esaezgil/aiohttp,juliatem/aiohttp,pfreixes/aiohttp,moden-py/aiohttp,KeepSafe/aiohttp,z2v/aiohttp,playpauseandstop/aiohttp,hellysmile/aiohttp,KeepSafe/aiohttp,Eyepea/aiohttp,singulared/aiohttp,alex-eri/aiohttp-1,rutsky/aiohttp,moden-py/aiohttp,alex-eri/aiohttp-1,rutsky/aiohttp,singulared/aiohttp,pfreixes/aiohttp,juliatem/aiohttp,moden-py/aiohttp,panda73111/aiohttp,arthurdarcet/aiohttp,esaezgil/aiohttp,AraHaanOrg/aiohttp,jettify/aiohttp,alex-eri/aiohttp-1,jettify/aiohttp,esaezgil/aiohttp,hellysmile/aiohttp,z2v/aiohttp,panda73111/aiohttp,jettify/aiohttp,singulared/aiohttp,rutsky/aiohttp,panda73111/aiohttp,arthurdarcet/aiohttp