CA-89303: A slave without master cannot bring up its management interface

TAMPA-LCM: HFX-566

It should not try to query the DB, since the master is not accessible.

This commit fixes the problem introduces by the fix for CA-87787,
commit: 8d0adadf54911e7b6a645ca1ca2fdb241f65ad3e

Signed-off-by: Jerome Maloberti <jerome.maloberti@citrix.com>