feat: add cephfs shared volume define

- add ceph class to manage ceph client configuration/packages
- add cephfs define for mounting volumes
- add ceph keyring define to manage secrets used to mount cephfs

site/profiles/manifests/ceph/keyring.pp

@@ -0,0 +1,21 @@
+# profiles::ceph::keyring
+define profiles::ceph::keyring (
+  String $key,
+  String $user = $name,
+  String $type = 'client',
+  Stdlib::Filemode $mode = '0600',
+  String $owner = 'ceph',
+  String $group = 'ceph',
+  Stdlib::Absolutepath $keyring_dir = '/etc/ceph',
+) {
+  $keyring_file = "${keyring_dir}/ceph.${type}.${user}.keyring"
+
+  file { $keyring_file:
+    ensure  => file,
+    owner   => $owner,
+    group   => $group,
+    mode    => $mode,
+    content => Sensitive(template('profiles/ceph/keyring.erb')),
+    require => File[$keyring_dir],
+  }
+}