Per-user password expiration parameter

The following parameters defined in /etc/login.defs can
be overridden per-user:

* PASS_MAX_DAYS
* PASS_MIN_DAYS
* PASS_WARN_DAYS
* INACTIVE

Related-Prod: PROD-18386

Change-Id: I5b182128f9dd8a043b48fb86e61febb2fd5c7e0a
diff --git a/tests/pillar/system.sls b/tests/pillar/system.sls
index 2973677..43fc65c 100644
--- a/tests/pillar/system.sls
+++ b/tests/pillar/system.sls
@@ -128,6 +128,7 @@
         enabled: true
         home: /root
         name: root
+        maxdays: 365
       testuser:
         enabled: true
         name: testuser