This patch introduce parameters which support using SSL to connect to
OVN_Northbound DB and OVN_Southbound DB.
Depends-On: https://review.opendev.org/#/c/674603/
Change-Id: I03bda5d2e36ab168079fc7e8be220c9a4e29e44f
Signed-off-by: Kamil Sambor <ksambor@redhat.com>