Skip the debug report test if there is no tool avaible

Skip the debug report test if there is no tool avaible

Signed-off-by: Shu Ming <shuming@linux.vnet.ibm.com>
Add a timeout tuning environment variable for debug report test

It is helpful when the timeout happens and the tester can tune it

Signed-off-by: Shu Ming <shuming@linux.vnet.ibm.com>