Fixing JsonLogster bug when keys contain '/'

Change-Id: I2acdbd86584ce4b5edb085ad97106bfd9a7f8701
Updating changelog for changes from master

Change-Id: I3a711df0afaa1e5bfc42442a7f497658254f4d41
Fixing bug where JsonLogster would only report metrics for last line in file

Change-Id: I5f3c2d07e55395f80716c1fdf0b1375f2624a8be
Fixing bug where JsonLogster would only report metrics for last line in file

Change-Id: I5f3c2d07e55395f80716c1fdf0b1375f2624a8be
Merge branch 'master' of ssh://gerrit.wikimedia.org:29418/operations/debs/logster
Merge branch 'master' into debian

Conflicts:
	debian/changelog

Change-Id: I93662d5d49e890e857394303df1df587b3dd9f11