vpp_papi: Fix missing dependency.
vpp_papi: Fix missing dependency.

Since we test vpp_papi as part of tests, the need for
ipaddress under python2.7 is masked.

Add ipaddress to setup.py for python <=3.3.

Change-Id: I01c2f5560eeb740e546024e84028d5a2fb2ace45
Type: fix
Signed-off-by: Paul Vinciguerra <b92f79aabe4c9c18085c7347110a52af0898a0ef@vinciconsulting.com>

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