test(pillar): use custom pillar file to run tests

kitchen.yml

             '*':
               - syslog_ng
       pillars_from_files:
-        syslog_ng.sls: pillar.example
+        syslog_ng.sls: test/salt/pillar/syslog_ng.sls
     verifier:
       inspec_tests:
         - path: test/integration/default

test/salt/pillar/syslog_ng.sls

+---
+syslog_ng:
+  options:
+    - chain_hostnames: no
+    - flush_lines: 0
+    - use_dns: no
+    - use_fqdn: no
+    - owner: root
+    - group: adm
+    - perm: =0640
+    - stats_freq: 0
+    - bad_hostname: "^gconfd$"
+
+  source:
+    - s_src:
+      - system: null
+      - internal: null
+
+  destination:
+    - d_syslog:
+      - file:
+          - /var/log/syslog
+
+  filter:
+    - f_syslog3:
+      - =not level(debug)
+
+  log:
+    -
+      - source: =s_src
+      - filter: =f_syslog3
+      - destination: =d_syslog