Fixing hostpath problem in debug mode for ro charm

Solving nested hostpath problem in debug mode for RO charm and adding missing hostpath of RO-SDN-onos-openflow.

Change-Id: Id75ccdb1e5d713c910686aaeddf0acb2e275b1c2
Signed-off-by: Gulsum Atici <gulsum.atici@canonical.com>