Update git submodules

Update git submodules

* Update docs/submodules/releng-xci from branch 'master'
  - Merge "[Baremetal] Add ericsson-pod2 pdf and idf"
  - [Baremetal] Add ericsson-pod2 pdf and idf

    Provide the idf and pdf for ericsson-pod2 deployment
    This is aligned with the pdf and idf from pharos lab:

    https://github.com/opnfv/pharos/blob/master/labs/ericsson/idf-pod2.yaml
    https://github.com/opnfv/pharos/blob/master/labs/ericsson/pod2.yaml

    Change-Id: Ic5b62a5751e5977affbbeb94937738434de5b3ab
    Signed-off-by: Manuel Buil <mbuil@suse.com>