indexer.log log level too verbose by default

Setup a new sherlock cluster, build 2046

No indexes defined and the default Debug level of indexer.log records 1-2 lines a second constantly. This is going to cause a lot of noise and the logs will rotate missing out important information.

2015-05-08T15:52:19.203Z+00:00 [Debug] fdb_snapshot_open call k:0xc20af662a0 db:&{} sn:18446744073709551615
2015-05-08T15:52:19.203Z+00:00 [Debug] fdb_snapshot_open retn k:0xc20af662a0 errNo:0 rv:&{}
2015-05-08T15:52:19.203Z+00:00 [Debug] fdb_iterator_init call k:0xc20b7257c0 db:&{} sk:0xc20b7010e0 ek:<nil> opt:2
2015-05-08T15:52:19.203Z+00:00 [Debug] fdb_iterator_init retn k:0xc20b7257c0 rv:&{}
2015-05-08T15:52:19.203Z+00:00 [Debug] fdb_snapshot_open call k:0xc20af662a0 db:&{} sn:18446744073709551615
2015-05-08T15:52:19.203Z+00:00 [Debug] fdb_snapshot_open retn k:0xc20af662a0 errNo:0 rv:&{}
2015-05-08T15:52:19.203Z+00:00 [Debug] fdb_iterator_init call k:0xc20b7258a0 db:&{} sk:0xc20b701180 ek:<nil> opt:2
2015-05-08T15:52:19.203Z+00:00 [Debug] fdb_iterator_init retn k:0xc20b7258a0 rv:&{}
2015-05-08T15:52:24.171Z+00:00 [Debug] fdb_snapshot_open call k:0xc20af662a0 db:&{} sn:18446744073709551615
2015-05-08T15:52:24.171Z+00:00 [Debug] fdb_snapshot_open retn k:0xc20af662a0 errNo:0 rv:&{}
2015-05-08T15:52:24.171Z+00:00 [Debug] fdb_iterator_init call k:0xc20c346b60 db:&{} sk:0xc20c3428c8 ek:<nil> opt:2
2015-05-08T15:52:24.171Z+00:00 [Debug] fdb_iterator_init retn k:0xc20c346b60 rv:&{}
2015-05-08T15:52:24.171Z+00:00 [Debug] fdb_snapshot_open call k:0xc20af662a0 db:&{} sn:18446744073709551615
2015-05-08T15:52:24.171Z+00:00 [Debug] fdb_snapshot_open retn k:0xc20af662a0 errNo:0 rv:&{}
2015-05-08T15:52:24.171Z+00:00 [Debug] fdb_iterator_init call k:0xc20c346c40 db:&{} sk:0xc20c342968 ek:<nil> opt:2
2015-05-08T15:52:24.171Z+00:00 [Debug] fdb_iterator_init retn k:0xc20c346c40 rv:&{}
2015-05-08T15:52:29.142Z+00:00 [Debug] fdb_snapshot_open call k:0xc20af662a0 db:&{} sn:18446744073709551615
2015-05-08T15:52:29.142Z+00:00 [Debug] fdb_snapshot_open retn k:0xc20af662a0 errNo:0 rv:&{}
2015-05-08T15:52:29.142Z+00:00 [Debug] fdb_iterator_init call k:0xc20c347760 db:&{} sk:0xc20c343250 ek:<nil> opt:2
2015-05-08T15:52:29.142Z+00:00 [Debug] fdb_iterator_init retn k:0xc20c347760 rv:&{}
2015-05-08T15:52:29.142Z+00:00 [Debug] fdb_snapshot_open call k:0xc20af662a0 db:&{} sn:18446744073709551615
2015-05-08T15:52:29.142Z+00:00 [Debug] fdb_snapshot_open retn k:0xc20af662a0 errNo:0 rv:&{}
2015-05-08T15:52:29.142Z+00:00 [Debug] fdb_iterator_init call k:0xc20c347840 db:&{} sk:0xc20c3432f0 ek:<nil> opt:2
2015-05-08T15:52:29.142Z+00:00 [Debug] fdb_iterator_init retn k:0xc20c347840 rv:&{}