Remove Port Restriction When Checking For NAT

When trying to determine if a peer is behind NAT, we should not be using the
ports when comparing addresses.

This patch removes the port from being checked and just useds the addresses
now.

(closes issue ASTERISK-22729)
Reported by: Michael L. Young
Tested by: Michael L. Young
Patches:
    asterisk-remove-using-port-for-nat-check.diff
                                     uploaded by Michael L. Young (license 5026)

Review: https://reviewboard.asterisk.org/r/2927/


git-svn-id: http://svn.asterisk.org/svn/asterisk/branches/11@401182 f38db490-d61c-443f-a65b-d21fe96a405b