This is the first part of the migration to Flogger. This change
migrates all classes of the 'http' module to Flogger. Other modules
continue to use slf4j. They should be migrated by follow-up changes.
During this migration we try to make the log statements more consistent:
- avoid string concatenation
- avoid usage of String.format(...)
Change-Id: I473c41733b00aa1ceab92fe0dc8cd1c6b347174c
Signed-off-by: Edwin Kempin <ekempin@google.com>
03d2d209b1