scripts: Collect logs even if deployment fails.

Always exit with success code when collecting various logs. This allows
this script to be used to collect partial logs in case a deployment
fails since it may help with debugging the root cause of the failure.

Change-Id: I4d5a2c71303e9ed466b5fd5dbc63469677f2380f

scripts/collect-test-info.sh

@@ -45,3 +45,5 @@ sudo chown $USER ${LOG_LOCATION}/ironic-conductor.log
 # In CI scenarios, we want other users to be able to read the logs.
 sudo chmod o+r ${LOG_LOCATION}/ironic-api.log
 sudo chmod o+r ${LOG_LOCATION}/ironic-conductor.log
+
+exit 0

scripts/test-bifrost.sh

@@ -93,6 +93,11 @@ elif [ ${ENABLE_KEYSTONE} = "true" ]; then
     CLOUD_CONFIG="-e cloud_name=bifrost"
 fi
 
+logs_on_exit() {
+    $SCRIPT_HOME/collect-test-info.sh
+}
+trap logs_on_exit EXIT
+
 # Change working directory
 cd $BIFROST_HOME/playbooks
 
@@ -157,6 +162,4 @@ if [ $EXITCODE != 0 ]; then
     echo "****************************"
 fi
 
-$SCRIPT_HOME/collect-test-info.sh
-
 exit $EXITCODE