SetFeatures Test fix, Flush Tet Fix, WriteRead Combo Test fix, compiler warnings fix

GrpAdminSetGetFeatCombo/fidArbitration_r10b.cpp: fixed arbitration burst values, should be n from 2^n not x from x=2^n.
GrpNVMFlushCmd/functionalityBare_r10b.cpp:  fixed end of namespace size check, so test doesn't run over the end (copied from meta namespace range check, and updated appropriately)
GrpNVMWriteReadCombo/startingLBABare_r10b.cpp: also end of namespace size check wasn't in bare namespace check, but was in meta namespace check (copied over, and updated appropriately)


Singletons/metaRsrc.cpp:  compiler warning, rc set but not used. comment says return value is ignored.
tnvme.cpp: compiler warning, thisTestPass set but not used.

I hope I didn't get any tabs in there this time :)