Switch to namespace sdtlib functions

puppetlabs-stdlib deprecated the existing functions in favor of
the new stdlib:: functions in 9.0.0. The version was released a few
years ago and now we assume we are ready to adopt to the migration.

Change-Id: I5369f25ddd0c985b6fc847d79ecdfeff12dacfff
Signed-off-by: Takashi Kajinami <kajinamit@oss.nttdata.com>

manifests/storage/server.pp

@@ -636,7 +636,7 @@ define swift::storage::server(
     }
   }
 
-  create_resources("swift_${type}_config", merge(
+  create_resources("swift_${type}_config", stdlib::merge(
     $common_opts,
     $log_statsd_opts,
     $type_opts,

manifests/xfs.pp

@@ -6,6 +6,6 @@ class swift::xfs {
   include swift::deps
 
   $packages = ['xfsprogs', 'parted']
-  ensure_packages($packages)
+  stdlib::ensure_packages($packages)
 
 }

metadata.json

@@ -23,7 +23,7 @@
         },
         {
             "name": "puppetlabs/stdlib",
-            "version_requirement": ">=5.0.0 <10.0.0"
+            "version_requirement": ">=9.0.0 <10.0.0"
         },
         {
             "name": "puppetlabs/xinetd",