Update git submodules

Update git submodules

* Update docs/submodules/integration/test from branch 'master'
  to b22ca0cdd67052c56c192416720462b0694086cd
  - Peer group reconfig test case

    Add test cases for peer-group
    configuration and reconfiguration.

    Configures peer-group assigns peer to it.
    Checks working peer with filled topology.
    Reconfigures peer-group without appropriate
    afi-safi, and checks empty topology.

    Change-Id: I87588b24847c61eb4ad6532ed653ad9989c4fd92
    Signed-off-by: Tomas Markovic <tomas.markovic@pantheon.tech>