tracing: test includes ipc console fiber if enabled

The test test_thread_monitor fails when a platform enables
the IPC console.
This commit fixes the test to count the IPC console fiber
if it is enabled in the project or the platform.

Change-Id: I9faf9d120b35d9211e558be8f5788885f30c3081
Signed-off-by: Juan Manuel Cruz <juan.m.cruz.alcaraz@intel.com>