Add a test for referencing a type nested in a generic class from a derived class
Add a test for referencing a type nested in a generic class from a derived class

This was reported in rdar://problem/31529413 and appears to have already
been fixed. Adding this test to ensure we have some coverage for this.

atrick/swift,return/swift,allevato/swift,aschwaighofer/swift,lorentey/swift,JGiola/swift,arvedviehweger/swift,djwbrown/swift,harlanhaskins/swift,Jnosh/swift,natecook1000/swift,huonw/swift,jmgc/swift,apple/swift,felix91gr/swift,shajrawi/swift,felix91gr/swift,xedin/swift,xedin/swift,jmgc/swift,gregomni/swift,harlanhaskins/swift,danielmartin/swift,allevato/swift,jopamer/swift,devincoughlin/swift,natecook1000/swift,CodaFi/swift,calebd/swift,calebd/swift,atrick/swift,jmgc/swift,gribozavr/swift,aschwaighofer/swift,atrick/swift,airspeedswift/swift,parkera/swift,jckarter/swift,uasys/swift,jckarter/swift,allevato/swift,milseman/swift,calebd/swift,harlanhaskins/swift,apple/swift,tkremenek/swift,natecook1000/swift,sschiau/swift,tjw/swift,deyton/swift,devincoughlin/swift,sschiau/swift,shahmishal/swift,karwa/swift,aschwaighofer/swift,tkremenek/swift,austinzheng/swift,CodaFi/swift,hooman/swift,jckarter/swift,lorentey/swift,allevato/swift,return/swift,swiftix/swift,airspeedswift/swift,rudkx/swift,ahoppen/swift,stephentyrone/swift,shajrawi/swift,OscarSwanros/swift,gribozavr/swift,brentdax/swift,gregomni/swift,karwa/swift,lorentey/swift,jopamer/swift,allevato/swift,apple/swift,atrick/swift,shajrawi/swift,felix91gr/swift,alblue/swift,huonw/swift,shahmishal/swift,parkera/swift,lorentey/swift,Jnosh/swift,milseman/swift,uasys/swift,frootloops/swift,harlanhaskins/swift,alblue/swift,rudkx/swift,rudkx/swift,parkera/swift,karwa/swift,xedin/swift,swiftix/swift,practicalswift/swift,natecook1000/swift,return/swift,sschiau/swift,hughbe/swift,glessard/swift,gribozavr/swift,hughbe/swift,OscarSwanros/swift,austinzheng/swift,hughbe/swift,huonw/swift,deyton/swift,frootloops/swift,airspeedswift/swift,hooman/swift,apple/swift,OscarSwanros/swift,gribozavr/swift,sschiau/swift,calebd/swift,uasys/swift,practicalswift/swift,airspeedswift/swift,amraboelela/swift,jopamer/swift,deyton/swift,return/swift,allevato/swift,lorentey/swift,hughbe/swift,practicalswift/swift,xwu/swift,tjw/swift,shajrawi/swift,glessard/swift,ahoppen/swift,gregomni/swift,tjw/swift,tkremenek/swift,huonw/swift,xwu/swift,CodaFi/swift,stephentyrone/swift,shahmishal/swift,xedin/swift,swiftix/swift,gribozavr/swift,djwbrown/swift,huonw/swift,alblue/swift,devincoughlin/swift,jopamer/swift,hooman/swift,hughbe/swift,xwu/swift,felix91gr/swift,deyton/swift,parkera/swift,uasys/swift,brentdax/swift,tkremenek/swift,roambotics/swift,amraboelela/swift,roambotics/swift,jmgc/swift,djwbrown/swift,jmgc/swift,nathawes/swift,amraboelela/swift,roambotics/swift,aschwaighofer/swift,zisko/swift,practicalswift/swift,natecook1000/swift,aschwaighofer/swift,return/swift,hooman/swift,jckarter/swift,glessard/swift,gribozavr/swift,parkera/swift,jtbandes/swift,frootloops/swift,shahmishal/swift,parkera/swift,amraboelela/swift,benlangmuir/swift,deyton/swift,jopamer/swift,apple/swift,OscarSwanros/swift,jmgc/swift,nathawes/swift,shahmishal/swift,CodaFi/swift,ahoppen/swift,zisko/swift,roambotics/swift,JGiola/swift,shajrawi/swift,devincoughlin/swift,xwu/swift,austinzheng/swift,sschiau/swift,austinzheng/swift,danielmartin/swift,arvedviehweger/swift,xwu/swift,sschiau/swift,huonw/swift,jtbandes/swift,natecook1000/swift,harlanhaskins/swift,danielmartin/swift,airspeedswift/swift,airspeedswift/swift,natecook1000/swift,stephentyrone/swift,xedin/swift,amraboelela/swift,OscarSwanros/swift,roambotics/swift,jtbandes/swift,karwa/swift,arvedviehweger/swift,swiftix/swift,uasys/swift,jtbandes/swift,calebd/swift,practicalswift/swift,amraboelela/swift,CodaFi/swift,aschwaighofer/swift,nathawes/swift,lorentey/swift,shajrawi/swift,jopamer/swift,arvedviehweger/swift,brentdax/swift,deyton/swift,brentdax/swift,milseman/swift,allevato/swift,jmgc/swift,xedin/swift,devincoughlin/swift,rudkx/swift,parkera/swift,Jnosh/swift,xwu/swift,alblue/swift,zisko/swift,djwbrown/swift,ahoppen/swift,swiftix/swift,djwbrown/swift,apple/swift,JGiola/swift,glessard/swift,benlangmuir/swift,hooman/swift,tkremenek/swift,karwa/swift,return/swift,Jnosh/swift,jtbandes/swift,gribozavr/swift,uasys/swift,zisko/swift,Jnosh/swift,milseman/swift,benlangmuir/swift,djwbrown/swift,parkera/swift,sschiau/swift,hughbe/swift,shajrawi/swift,frootloops/swift,jtbandes/swift,tjw/swift,atrick/swift,lorentey/swift,glessard/swift,stephentyrone/swift,frootloops/swift,JGiola/swift,Jnosh/swift,frootloops/swift,jtbandes/swift,JGiola/swift,lorentey/swift,brentdax/swift,zisko/swift,nathawes/swift,ahoppen/swift,stephentyrone/swift,ahoppen/swift,huonw/swift,hooman/swift,shajrawi/swift,Jnosh/swift,deyton/swift,austinzheng/swift,CodaFi/swift,nathawes/swift,felix91gr/swift,felix91gr/swift,gregomni/swift,arvedviehweger/swift,shahmishal/swift,rudkx/swift,OscarSwanros/swift,tjw/swift,calebd/swift,brentdax/swift,brentdax/swift,danielmartin/swift,tjw/swift,stephentyrone/swift,jckarter/swift,gribozavr/swift,swiftix/swift,hooman/swift,devincoughlin/swift,danielmartin/swift,danielmartin/swift,aschwaighofer/swift,zisko/swift,gregomni/swift,roambotics/swift,practicalswift/swift,arvedviehweger/swift,shahmisha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