Update git submodules

Update git submodules

* Update docs/submodules/sdnc/oam.git from branch 'master'
  to 220ebdca39a85491b22acc7ed9024a348652b1b0
  - Merge "SDNC-665: Python script for adding to ODL keystore"
  - SDNC-665: Python script for adding to ODL keystore

    This is for the post operation of keystore to add
    new keystore to odl while it's coming up and also
    to add certificates and keys that are available
    to odl's keystore and truststore

    Issue-ID: SDNC-665
    Change-Id: Id19d4179170255adfe1a2448a3a2b8173ecf9e93
    Signed-off-by: DarraghEgan <darragh.egan@est.tech>