CA-30694: quicktest only chekcs for promiscuousness of a VIF if brport/promisc exists in sysfs
CA-30694: quicktest only chekcs for promiscuousness of a VIF if brport/promisc exists in sysfs

If it doesn't exist then the network stack does not support this funtionality
(this is expected with the Nicira vswitch which uses SPAN/RSPAN instead). If
brport/promisc does exist in sysfs then still check it is correct.

jjd27/xen-api,koushikcgit/xen-api,anoobs/xen-api,cheng--zhang/xen-api,Frezzle/xen-api,huizh/xen-api,ravippandey/xen-api,agimofcarmen/xen-api,koushikcgit/xen-api,guard163/xen-api,euanh/xen-api,ravippandey/xen-api,Frezzle/xen-api,johnelse/xcp-rrdd,robertbreker/xen-api,cheng-z/xen-api,cheng--zhang/xen-api,rafalmiel/xen-api,huizh/xen-api,cheng--zhang/xen-api,agimofcarmen/xen-api,rafalmiel/xen-api,cheng-z/xen-api,anoobs/xen-api,euanh/xen-api,johnelse/xcp-rrdd,sharady/xcp-networkd,djs55/xen-api,huizh/xen-api,simonjbeaumont/xen-api,robhoes/squeezed,koushikcgit/xcp-rrdd,robertbreker/xen-api,rafalmiel/xen-api,salvocambria/xen-api,salvocambria/xen-api,simonjbeaumont/xen-api,vasilenkomike/xen-api,huizh/xen-api,djs55/xcp-rrdd,cheng--zhang/xen-api,djs55/xcp-networkd,Frezzle/xen-api,cheng-z/xen-api,Frezzle/xen-api,djs55/xen-api,guard163/xen-api,huizh/xen-api,cheng-z/xen-api,djs55/xcp-rrdd,jjd27/xen-api,djs55/xcp-networkd,euanh/xen-api,agimofcarmen/xen-api,jjd27/xen-api,vasilenkomike/xen-api,thomassa/xen-api,djs55/xen-api,cheng--zhang/xen-api,simonjbeaumont/xen-api,ravippandey/xen-api,salvocambria/xen-api,agimofcarmen/xen-api,cheng--zhang/xen-api,vasilenkomike/xen-api,thomassa/xen-api,huizh/xen-api,djs55/xen-api,agimofcarmen/xen-api,djs55/xen-api,anoobs/xen-api,guard163/xen-api,koushikcgit/xen-api,koushikcgit/xen-api,sharady/xcp-networkd,srowe/xen-api,srowe/xen-api,anoobs/xen-api,robertbreker/xen-api,srowe/xen-api,thomassa/xen-api,ravippandey/xen-api,euanh/xen-api,agimofcarmen/xen-api,koushikcgit/xen-api,koushikcgit/xcp-rrdd,euanh/xen-api,guard163/xen-api,vasilenkomike/xen-api,anoobs/xen-api,simonjbeaumont/xen-api,koushikcgit/xcp-networkd,ravippandey/xen-api,koushikcgit/xen-api,cheng--zhang/xen-api,salvocambria/xen-api,euanh/xen-api,simonjbeaumont/xen-api,rafalmiel/xen-api,thomassa/xen-api,robertbreker/xen-api,cheng-z/xen-api,simonjbeaumont/xcp-rrdd,anoobs/xen-api,salvocambria/xen-api,robertbreker/xen-api,djs55/squeezed,koushikcgit/xcp-rrdd,jjd27/xen-api,guard163/xen-api,simonjbeaumont/xen-api,thomassa/xen-api,jjd27/xen-api,koushikcgit/xcp-networkd,jjd27/xen-api,Frezzle/xen-api,cheng-z/xen-api,ravippandey/xen-api,robertbreker/xen-api,simonjbeaumont/xcp-rrdd,rafalmiel/xen-api,cheng-z/xen-api,srowe/xen-api,thomassa/xen-api,djs55/xen-api,vasilenkomike/xen-api,salvocambria/xen-api,guard163/xen-api,srowe/xen-api,rafalmiel/xen-api,vasilenkomike/xen-api