Fix nested suite filtering.
Fix nested suite filtering.

A spec should be run if:

* The spec is focused.
* The spec's suite is focused.
* Any of the spec's suite's parentSuites are focused.

CesiumGS/cesium,CesiumGS/cesium,soceur/cesium,aelatgt/cesium,wallw-bits/cesium,ggetz/cesium,hodbauer/cesium,likangning93/cesium,esraerik/cesium,omh1280/cesium,emackey/cesium,kiselev-dv/cesium,NaderCHASER/cesium,emackey/cesium,AnimatedRNG/cesium,soceur/cesium,hodbauer/cesium,kiselev-dv/cesium,josh-bernstein/cesium,jason-crow/cesium,denverpierce/cesium,aelatgt/cesium,ggetz/cesium,aelatgt/cesium,CesiumGS/cesium,kiselev-dv/cesium,wallw-bits/cesium,CesiumGS/cesium,kaktus40/cesium,denverpierce/cesium,YonatanKra/cesium,omh1280/cesium,likangning93/cesium,likangning93/cesium,AnimatedRNG/cesium,omh1280/cesium,jasonbeverage/cesium,wallw-bits/cesium,jason-crow/cesium,kaktus40/cesium,aelatgt/cesium,AnimatedRNG/cesium,YonatanKra/cesium,likangning93/cesium,AnalyticalGraphicsInc/cesium,geoscan/cesium,emackey/cesium,hodbauer/cesium,emackey/cesium,NaderCHASER/cesium,NaderCHASER/cesium,CesiumGS/cesium,AnalyticalGraphicsInc/cesium,denverpierce/cesium,soceur/cesium,YonatanKra/cesium,oterral/cesium,denverpierce/cesium,esraerik/cesium,ggetz/cesium,likangning93/cesium,esraerik/cesium,kiselev-dv/cesium,YonatanKra/cesium,wallw-bits/cesium,oterral/cesium,esraerik/cesium,omh1280/cesium,jasonbeverage/cesium,jason-crow/cesium,jason-crow/cesium,geoscan/cesium,AnimatedRNG/cesium,josh-bernstein/cesium,progsung/cesium,progsung/cesium,ggetz/cesium,oterral/cesium