gpu: nvgpu: unit: required tests system

When running unit testing, we need to ensure that all expected unit
tests were actually run. This used to be done by an external Python
script, but it is not suitable for some OSes. This patch brings this
mechanism into the unit testing framework, and makes use of an INI
file to provide the list of expected tests.

JIRA NVGPU-3072

Change-Id: I9ed590de9005fe10324c594ea33ebc8fda482019
Signed-off-by: Nicolas Benech <nbenech@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2317220
Reviewed-by: automaticguardword <automaticguardword@nvidia.com>
Reviewed-by: Alex Waterman <alexw@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
GVS: Gerrit_Virtual_Submit

userspace/unit.sh

@@ -46,7 +46,7 @@ else
         # running on host
         LD_LIBRARY_PATH="build:build/units"
         # On host, must run single-threaded to avoid high VAs
-        NVGPU_UNIT="./build/nvgpu_unit --num-threads 1"
+        NVGPU_UNIT="./build/nvgpu_unit --num-threads 1 -r required_tests.ini"
 fi
 export LD_LIBRARY_PATH
 
@@ -70,10 +70,6 @@ if [ $rc -eq "0" ]; then
                 esac
                 shift
         done
-        echo $testlevelparam
-	echo "Checking executed tests against list of required tests:"
-	./testlist.py --html $testlevelparam
-	rc=$?
 fi
 popd
 exit $rc