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>