autotest: disable ASAN when SPDK_TEST_BLOCKDEV

At the time of SPDK 19.04 release the blockdev tests
were run on machines without libasan installed. A few
months after the release we've merged a fairly big
patch series enabling blockdev to be run with ASAN
and we've installed libasan on all CI machines.

19.04.x doesn't have this patch series and currently
fails to start fio on CI.

We don't want to cherry-pick the entire series, so just
explicitly disable ASAN in our test scripts whenever
blockdev tests are run.

Change-Id: Ib5e26932b5dfd736611ffabd4b055459ec25e59f
Signed-off-by: Darek Stojaczyk <dariusz.stojaczyk@intel.com>
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/462820

test/common/autotest_common.sh

@@ -73,6 +73,11 @@ else
 	export DEPENDENCY_DIR
 fi
 
+if [ $SPDK_TEST_BLOCKDEV -eq 1 ]; then
+	# blockdev.sh in SPDK 19.04 is not able to run with ASAN
+	export SPDK_RUN_ASAN=0
+fi
+
 if [ ! -z "$HUGEMEM" ]; then
 	export HUGEMEM
 fi