MB-36228: Skip ep_testsuite_checkpoint tests under Magma & Windows
MB-36228: Skip ep_testsuite_checkpoint tests under Magma & Windows

Tests in ep_testsuite_checkpoint are intermittently hanging / timing
out when run under Magma on Windows. Temporarily skip them while
problem is investigated.

Change-Id: Iabc11a89d224ff3361a586a1943d38b8aca34b8f
Reviewed-on: http://review.couchbase.org/115607
Tested-by: Build Bot <80754af91bfb6d1073585b046fe0a474ce868509@couchbase.com>
Reviewed-by: Trond Norbye <60edd2ef23891a753f231b0c6f161dc634079a93@couchbase.com>

daverigby/kv_engine,daverigby/kv_engine,daverigby/kv_engine,daverigby/kv_engine