Fix Warnings on Campaign Logger

for some reason privates are not actually private. Originally this
threw warnings for the campaign logger; when
https://gerrit.wikimedia.org/r/#/c/93156/1 this was tried things
broke in the banner logger...

so we rename

Change-Id: I0ae5d1c8be45f4633d5a87adeafdcf0e7af4adff