Correct LOG.debug use

The commit b3202c3283597de031572e0ede082237487d8110 used:

  LOG.debug("...%(key1)s...", key1=value1)

which  is not supported, this change ues instead:

  LOG.debug("...%(key1)s...", {"key1": value1})

Change-Id: I9bd63c27ca8acf89284399fda8cd74c82906113b
Merge "Correct LOG.debug use"