tcp: validate connections in output
tcp: validate connections in output

Type: feature

This shouldn't happen unless connections are removed after buffers were
enqueued to tcp-output and before tcp-output runs. For instance, packet
is enqueued to tcp output and cleanup is called for connection.

Change-Id: Ib7dd82ffa6cfb21ff5068aba010e0a3497eeea13
Signed-off-by: Florin Coras <c9715e5cdf0718c2e9b10678757dfb027875eba2@cisco.com>

FDio/vpp,FDio/vpp,vpp-dev/vpp,FDio/vpp,chrisy/vpp,vpp-dev/vpp,vpp-dev/vpp,chrisy/vpp,vpp-dev/vpp,FDio/vpp,vpp-dev/vpp,chrisy/vpp,FDio/vpp,vpp-dev/vpp,vpp-dev/vpp,FDio/vpp,chrisy/vpp,chrisy/vpp,FDio/vpp,chrisy/vpp,FDio/vpp,chrisy/vpp,chrisy/vpp