add /log/sleep/count endpoint, and other refactoring to support it

Signed-off-by: Dave Liebreich <dliebreich@pivotallabs.com>
in-flight refactor

Signed-off-by: Dave Liebreich <dliebreich@pivotallabs.com>
Adding tests around logging service for dora app to help testing
loggregator
add marker line, silence curl, and increase rate of bg log emitters