mgr/smb: reimplement part of the _search_resources function

mgr/smb: reimplement part of the _search_resources function

Reimplement part of the _search_resources function to avoid using yet
another static mapping between the SMBResource type and it's partner
entry type which is one more place you forget to update when you
add a new type. Now, the type mapping is based on the matcher class
and the typ mapping function provided by the internal.py module.

Fixes: 5712016c2133870da3f704d8457358ad06efc87f
Signed-off-by: John Mulligan <jmulligan@redhat.com>