framework: fix deinitSession when using waiver xml

framework: fix deinitSession when using waiver xml

Take numWaived in to account when considering if run was ok, patch also
add result.numWaived to the total number of tests, otherwise we hit
following assert when running with waiver:

cts-runner: glcTestRunner.cpp:829: Unknown function:
Assertion `result.numExecuted == result.numPassed + result.numFailed +
           result.numNotSupported + result.numWarnings' failed.

Components: Framework, OpenGL

VK-GL-CTS issue: 2631

Affects:
   cts-runner

Change-Id: Iac776fd1174e5461c455282cecca208f0322358d
Signed-off-by: Tapani Pälli <tapani.palli@intel.com>