Allow host to set remote dbg setting with FB_ADB_REMOTE_DEBUG envvar
Allow host to set remote dbg setting with FB_ADB_REMOTE_DEBUG envvar

0359xiaodong/fb-adb,0359xiaodong/fb-adb,JuudeDemos/fb-adb,0359xiaodong/fb-adb,tcmulcahy/fb-adb,tcmulcahy/fb-adb,biddyweb/fb-adb,tcmulcahy/fb-adb,JuudeDemos/fb-adb,biddyweb/fb-adb,JuudeDemos/fb-adb,biddyweb/fb-adb