Add kitchen tests + travis ci

- enable topics on test pillar
- add integration test for sudo enabled groups
- use loop devices only for storage suite
- example inspec test for sudo state
diff --git a/tests/integration/system/sudoer_spec.rb b/tests/integration/system/sudoer_spec.rb
new file mode 100644
index 0000000..21163cf
--- /dev/null
+++ b/tests/integration/system/sudoer_spec.rb
@@ -0,0 +1,8 @@
+describe command('grep "" /etc/sudoers.d/*') do
+    its('stdout') { should_not match /sudogroup0/  }
+    its('stdout') { should match /salt-ops ALL=\(DBA\) NOPASSWD/  }
+    its('stdout') { should match /sudogroup2.*localhost=/  }
+    its('stdout') { should match /db-ops.*less/  }
+    its('stdout') { should_not match /sudogroup0/  }
+    its('stdout') { should_not match /sudogroup1 .* !SUDO_RESTRICTED_SU/  }
+end