[201911] Support vrf mgmt for aaa

[inspurSDN]

Consider if the socket is bound to a device when binding.

[paulmenzel]

Please elaborate on the problem, and what devices you see this with.

Is that patch also part of the main branch? If not, please send it first to the main branch.

[paulmenzel]

Where is the patch file? Did you forget to add it with git add?

stg import: [Errno 2] No such file or directory: '/__w/3/s/patch/Support-aaa-
            for-mgmt-vrf.patch'

[saiarcot895]

Why is this patch needed? Why is a security check being loosened?

[jarias-lfx]

/easycla