[submodule] Bump pharos git repo for pod changes

[submodule] Bump pharos git repo for pod changes

stable/gambia specific changes:
- align reclass parameter naming after [1];
- include ODL public IP definition from [2], preparing for ODL BGPVPN
  scenario integration;

[1] https://gerrit.opnfv.org/gerrit/#/c/63023/
[2] https://gerrit.opnfv.org/gerrit/#/c/63273/

Change-Id: I698d97f3dbf8cdbe7002c5e4b02ac1a51dacdbfb
Signed-off-by: Guillermo Herrero <guillermo.herrero@enea.com>
Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>
(cherry picked from commit ec817180eece7be6e161e4633e08f41ea94cb903)