Add kitchen tests to formula

Change-Id: Ibb11690fc631e59cf7e5eddd93a2950c5b240629
diff --git a/tests/pillar/linux.sls b/tests/pillar/linux.sls
new file mode 100644
index 0000000..a150747
--- /dev/null
+++ b/tests/pillar/linux.sls
@@ -0,0 +1,3 @@
+linux:
+  system:
+    domain: ci.local