Ensure wget is installed for RGW Keystone integration

The minimal install of CentOS does not include wget causing the
exec resources to fail.  This patch ensures that it is installed
on the operating system.

Change-Id: I55b8a227bbf309f99583261eb879e6a1b6e602de

manifests/params.pp

@@ -53,7 +53,7 @@ class ceph::params (
       $pkg_radosgw         = 'radosgw'
       $user_radosgw        = 'www-data'
       $pkg_fastcgi         = 'libapache2-mod-fastcgi'
-      $pkg_nsstools        = 'libnss3-tools'
+      $pkg_nsstools        = ['libnss3-tools', 'wget']
       $service_provider    = 'debian'
       $pkg_policycoreutils = 'policycoreutils'
     }
@@ -62,7 +62,7 @@ class ceph::params (
       $pkg_radosgw         = 'ceph-radosgw'
       $user_radosgw        = 'apache'
       $pkg_fastcgi         = 'mod_fastcgi'
-      $pkg_nsstools        = 'nss-tools'
+      $pkg_nsstools        = ['nss-tools', 'wget']
       $service_provider    = 'systemd'
       $pkg_policycoreutils = 'policycoreutils-python'
     }

manifests/rgw/keystone.pp

@@ -132,7 +132,7 @@ define ceph::rgw::keystone (
   if $use_pki {
     # fetch the keystone signing cert, add to nss db
     $pkg_nsstools = $::ceph::params::pkg_nsstools
-    ensure_resource('package', $pkg_nsstools, {'ensure' => 'present'})
+    ensure_packages($pkg_nsstools, {'ensure' => 'present'})
 
     file { $nss_db_path:
       ensure => directory,