CBQE-1181: ignore tmp_oom errs in sdk

occurs when out of memory.  we should be able to track this by looking at(plotting) 'ep_tmp_oom_errors'.
ignore as in do not print to output.

Change-Id: Ied7bd0471c1d8b758f404286809daacb02461b90
Reviewed-on: http://review.couchbase.org/25403
Tested-by: buildbot <build@couchbase.com>
Reviewed-by: Chisheng Hong <chisheng@couchbase.com>
Tested-by: Chisheng Hong <chisheng@couchbase.com>