Change logger name to module itself instead of root

Using root logger will make public module log failed by unknow keyword.
Just change the logger name to module itself could dismiss this impact.
And disable logger.propagate could prevent double outputing.

Change-Id: I18696d124ebac9ca970d502558972e51de759097
Fixes: bug #1105133
Dynamic Large Object sleeps too much

DLO is supposed to sleep 1 second per segment after 10 (default) initial
segments are loaded to prevent abuse of the system. Currently, if the user
did a range request to the 11th segment the 1 sec delay would start immediately
on the 11th segment because the skipped segments were counted as initial
segments. This path fixes that.

Change-Id: I53bbc24af54921ddc04d9cb3b704366b51b3f740
Merge "Dynamic Large Object sleeps too much"
Merge "Change logger name to module itself instead of root"