Adds missing OpenDaylight username/password from ODL OVS service

Adds missing OpenDaylight username/password from ODL OVS service

ODL username and password are already present in the OpenDaylightApi
service.  However, when moving the OpenDaylightApi service to its own
custom role, the Controller/Compute nodes no longer have access to these
hiera values.  This patch adds them also to the OpenDaylightOvs service.

Closes-Bug: 1651499
Depends-On: I418643810ee6b8a2c17a4754c83453140ebe39c7

Change-Id: I169fdad4c94bd6dfc1fe7cde3d6b19b36d916af7
Signed-off-by: Tim Rozet <trozet@redhat.com>