Notify password expiry (#1551)

* Create script.js

* Create readme.md

Author: Charanjet

Background Scripts/Notify User of Password Expiry/readme.md

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+This script will work to notify the users if their password is going to expire in less than 7 days. 
+Prerequisite : You will need to create an event first.

Background Scripts/Notify User of Password Expiry/script.js

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+var userGR = new GlideRecord('sys_user');
+userGR.query();
+while (userGR.next()) {
+    var expiryDate = new GlideDateTime(userGR.password_needs_reset_by);
+    var today = new GlideDateTime();
+    var diff = GlideDateTime.subtract(expiryDate, today);
+
+    // Check the difference in days
+    if (diff.getDays() < 7) {
+        gs.eventQueue('password_expiry', userGR, 'Your password will expire in ' + diff.getDays() + ' days.', '');
+    }
+}