gentoo: include gentoo class to fix deps

manifests/keywords.pp

 define gentoo::keywords ($source, $ensure=present) {
+    include gentoo
+
     file {
         "gentoo_keywords_${name}":
             path    => "/etc/portage/package.keywords/${name}",
             source  => "${source}",
             ensure  => $ensure,
-#            require => File["/etc/portage/package.keywords"],
+            require => File["/etc/portage/package.keywords"],
     }
 }

manifests/mask.pp

 define gentoo::mask ($source="", $ensure=present) {
+    include gentoo
+
     file {
         "gentoo_mask_${name}":
             path    => "/etc/portage/package.mask/${name}",
             source  => "${source}",
             ensure  => $ensure,
-#            require => File["/etc/portage/package.mask"],
+            require => File["/etc/portage/package.mask"],
     }
 }

manifests/unmask.pp

 define gentoo::unmask ($source, $ensure=present) {
+    include gentoo
     file {
         "gentoo_unmask_${name}":
             path    => "/etc/portage/package.unmask/${name}",
             source  => "${source}",
             ensure  => $ensure,
-#            require => File["/etc/portage/package.unmask"],
+            require => File["/etc/portage/package.unmask"],
     }
 }

manifests/use.pp

 define gentoo::use ($source, $ensure=present) {
+    include gentoo
+
     file {
         "gentoo_use_${name}":
             path    => "/etc/portage/package.use/${name}",
             source  => $source,
             ensure  => $ensure,
             notify  => Exec["emerge_changed_use"],
-    #        require => File["/etc/portage/package.use"],
+            require => File["/etc/portage/package.use"],
     }
 }