jenkins-run: add env var to invocation to allow passing more opts from jenkins

Change-Id: I6deaea178cb96bf1c105657091e8798993f7a405
diff --git a/contrib/jenkins-run.sh b/contrib/jenkins-run.sh
index 6be14aa..e82f562 100755
--- a/contrib/jenkins-run.sh
+++ b/contrib/jenkins-run.sh
@@ -34,4 +34,4 @@
 ssh "$osmo_gsm_tester_host" "mv $tmp_dir/$trial_name $osmo_gsm_tester_dir"
 trial_dir="$osmo_gsm_tester_dir/$trial_name"
 
-ssh "$osmo_gsm_tester_host" "python3 -u $osmo_gsm_tester_src/src/osmo-gsm-tester.py $trial_dir -T"
+ssh "$osmo_gsm_tester_host" "python3 -u $osmo_gsm_tester_src/src/osmo-gsm-tester.py $trial_dir -T $OSMO_GSM_TESTER_OPTS"