Merge branch 'fix-ci-reuse' into 'master'

fix can_reuse_machine.py script

See merge request openappstack/openappstack!174

.gitlab/ci_scripts/can_reuse_machine.py

@@ -16,13 +16,13 @@ MACHINES = greenhost_cloud.get_droplets_by_name("^{}$".format(HOSTNAME))
 
 if MACHINES == []:
     print("No machines found with hostname {}".format(HOSTNAME))
-    exit(1)
+    sys.exit(1)
 
 for machine in MACHINES:
     print("Machine status is {}".format(machine['status']))
-    print("Comparing IP address {} with IP address {}".format(
+    print("Comparing IP address '{}' with IP address '{}'".format(
         machine['networks']['v4'][0]['ip_address'], IP_ADDRESS))
-    if machine['status'] != 'running' and \
+    if machine['status'] == 'running' and \
             machine['networks']['v4'][0]['ip_address'] == IP_ADDRESS:
-        exit(0)
-exit(1)
+        sys.exit(0)
+sys.exit(1)