Increase Logging, fix directory delete

When deleting a directory, we need to do a rexep search of all files that start
with the directory that we want to delete, but not revisions that happen to
share the same UUID.  Changes the regexp for directory delete to include the
trailing '/' so it limits the scope.

Adds logging where needed

Change-Id: Ia60618c17a863417224fadd9c055be658fb4ba4a
Signed-off-by: beierlm <mark.beierl@canonical.com>