BUG-1622 Fix handling of non-downloadable schemas from remote netconf device

Change-Id: I1b7a5b379e7d25fcbceba105dce6354dfa49c8af
Signed-off-by: Maros Marsalek <mmarsale@cisco.com>
Merge "BUG-1622 Fix handling of non-downloadable schemas from remote netconf device"