Dboreham/deploy volume control (#401)

* Implement volume control

* Deploy test

* Add test for volumes

* Enable CI for deploy test

tests/deploy/run-deploy-test.sh

@@ -0,0 +1,48 @@
+#!/usr/bin/env bash
+set -e
+if [ -n "$CERC_SCRIPT_DEBUG" ]; then
+  set -x
+fi
+# Dump environment variables for debugging
+echo "Environment variables:"
+env
+# Test basic stack-orchestrator deploy
+echo "Running stack-orchestrator deploy test"
+# Bit of a hack, test the most recent package
+TEST_TARGET_SO=$( ls -t1 ./package/laconic-so* | head -1 )
+# Set a non-default repo dir
+export CERC_REPO_BASE_DIR=~/stack-orchestrator-test/repo-base-dir
+echo "Testing this package: $TEST_TARGET_SO"
+echo "Test version command"
+reported_version_string=$( $TEST_TARGET_SO version )
+echo "Version reported is: ${reported_version_string}"
+echo "Cloning repositories into: $CERC_REPO_BASE_DIR"
+rm -rf $CERC_REPO_BASE_DIR
+mkdir -p $CERC_REPO_BASE_DIR
+# Test bringing the test container up and down
+# with and without volume removal
+$TEST_TARGET_SO --stack test setup-repositories
+$TEST_TARGET_SO --stack test build-containers
+$TEST_TARGET_SO --stack test deploy up
+$TEST_TARGET_SO --stack test deploy down
+# The next time we bring the container up the volume will be old (from the previous run above)
+$TEST_TARGET_SO --stack test deploy up
+log_output_1=$( $TEST_TARGET_SO --stack test deploy logs )
+if [[ "$log_output_1" == *"Filesystem is old"* ]]; then
+    echo "Retain volumes test: passed"
+else
+    echo "Retain volumes test: FAILED"
+    exit 1
+fi
+$TEST_TARGET_SO --stack test deploy down --delete-volumes
+# Now when we bring the container up the volume will be new again
+$TEST_TARGET_SO --stack test deploy up
+log_output_2=$( $TEST_TARGET_SO --stack test deploy logs )
+if [[ "$log_output_2" == *"Filesystem is fresh"* ]]; then
+    echo "Delete volumes test: passed"
+else
+    echo "Delete volumes test: FAILED"
+    exit 1
+fi
+$TEST_TARGET_SO --stack test deploy down --delete-volumes
+echo "Test passed"