Pass format args as arguments to debug method (#1085057)

Resolves: fed#1085057

Also, use file level log variable instead of regetting
the value in each method call.

Signed-off-by: mulhern <amulhern@redhat.com>
Remove unnecessary function definitions in abstract properties

Signed-off-by: mulhern <amulhern@redhat.com>
Do not execute smallestMember property method twice.

Signed-off-by: mulhern <amulhern@redhat.com>