Added more test for 'DHCPTools'
- working on 'leaseObj' functions
Adding test for DHCPObjs
- problems but this is essential for determining the problem with the code
Fixed 'leaseObj' test:
- using fixed dir(leaseObj) as reference list for fields that should exist
   - missing refdir=['dups', 'end', 'ip', 'ipval', 'leasestr', 'mac', 'name', 'nextstate', 'start', 'state', 'uid', 'dups', 'end', 'ip', 'ipval', 'leasestr', 'mac', 'name', 'nextstate', 'start', 'state', 'uid']
 in list values from created leaseObj