test(service): add helper state to run service in containers

Some distros do not start the service if virtualization is detected, so
we force the service to start to test the formula

* Semi-automated by myii/ssf-formula#333

kitchen.yml

@@ -347,11 +347,16 @@ verifier:
 suites:
   - name: default
     provisioner:
+      dependencies:
+        - name: states
+          path: ./test/salt
       state_top:
         base:
           '*':
             - ntp.ng._mapdata
             - ntp.ng
+          'G@init:systemd and ( G@os:SUSE )':
+            - states.custom_systemd_service
       pillars:
         top.sls:
           base:

test/salt/states/custom_systemd_service.sls

@@ -0,0 +1,27 @@
+# This state is used to prepare environment for formula testing
+
+# In distros that have a systemd unit, make sure the service is
+# started even if running in a containerized environment
+
+{%- set sls_config_file = 'ntp.ng.config.file' %}
+{%- set service_file = {
+      'SUSE': '/usr/lib/systemd/system/ntpd.service',
+    }.get(grains.os, '') %}
+
+test-salt-states-custom-systemd-service-file-replace:
+  file.replace:
+    - name: {{ service_file }}
+    - pattern: 'ConditionVirtualization=!container'
+    - repl: ''
+    - show_changes: True
+    - require:
+      - file: ntpd_conf
+
+test-salt-states-custom-systemd-service-cmd-wait:
+  cmd.wait:
+    - name: systemctl daemon-reload
+    - runas: root
+    - watch:
+      - file: test-salt-states-custom-systemd-service-file-replace
+    - require_in:
+      - service: ntpd