Added manifest to generate swiftrc file

manifests/auth_file.pp

@@ -0,0 +1,20 @@
+class swift::auth_file (
+  $admin_tenant,
+  $admin_password,
+  $admin_user      = 'admin',
+  $auth_url        = 'http://127.0.0.1:5000/v2.0/'
+) {
+
+  file { '/root/swiftrc':
+    ensure  => present,
+    owner   => 'root',
+    group   => 'root',
+    mode    => '0600',
+    content => 
+  "
+  export ST_USER=${admin_tenant}:${admin_user}
+  export ST_KEY=${admin_password}
+  export ST_AUTH=${auth_url}
+  "
+  }
+}