We don't log when loggetblocktemplate() is called.
This is what any other method looks like when it's called:
2017-04-06 14:34:48 Received a POST request for / from 127.0.0.1:37080
2017-04-06 14:34:48 ThreadRPCServer method=help
and getblocktemplate:
2017-04-06 14:35:02 Received a POST request for / from 127.0.0.1:37088
This is a holdover from when getwork was introduced here: https://github.com/bitcoin/bitcoin/commit/776d0f34595fd616129d4816a337662ff39de7c6#diff-86eca98b63dcc6ac488efdc7de47be31L1421
There's no reason not to log getblocktemplate(). It's annoying not to see the log during testing/debugging.