Fixing cleanup job

Added in wait for apt
fixed activate command

Change-Id: I49f956797c6175f95d05b9b9132c938f73a66378
Signed-off-by: afenner <andrew.fenner@est.tech>
diff --git a/jjb/cloud-infra/scripts/cleanup-heat-stacks.sh b/jjb/cloud-infra/scripts/cleanup-heat-stacks.sh
index 13523be..817499b 100644
--- a/jjb/cloud-infra/scripts/cleanup-heat-stacks.sh
+++ b/jjb/cloud-infra/scripts/cleanup-heat-stacks.sh
@@ -47,7 +47,7 @@
 /bin/rm -rf $WORKSPACE/.venv
 virtualenv --python python3 --never-download $WORKSPACE/.venv
 set +u
-source $WORKSPACE/.venv
+source $WORKSPACE/.venv/bin/activate
 set -u
 pip install --quiet --upgrade pip
 pip install --quiet python-cinderclient==6.0.0