kcollectd is marked for autoremoval from testing

[Debian testing autoremoval watch]

kcollectd 0.9-4 is marked for autoremoval from testing on 2017-12-03

It (build-)depends on packages with these RC bugs:
878343: libmongoc-dev: "pkg-config --libs libmongoc-1.0" returns -lsnappy but 
no dependency on libsnappy-dev