MB-8733: Improve view engine partition logging

Currently the logging results in log files with a lot
of whitespace and line breaks. That makes them hard to
deal with tools line based tools like grep.

With this change the function call and arguments are
printed in a single line.

Change-Id: I11be82009d603d4c0eec01036d8e317c61fbb1d3
Reviewed-on: http://review.couchbase.org/27791
Reviewed-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>
Tested-by: Volker Mische <volker.mische@gmail.com>