puppet: Add CentOS packages to static_asset_compiler.pp.

puppet/zulip/manifests/static_asset_compiler.pp

@@ -1,4 +1,7 @@
 class zulip::static_asset_compiler {
+  include zulip::common
+  case $::osfamily {
+    'debian': {
       if $zulip::base::release_name == 'trusty' {
         $closure_compiler_package = 'libclosure-compiler-java'
       } else {
@@ -11,6 +14,18 @@ class zulip::static_asset_compiler {
         # Used by makemessages i18n
         'gettext',
       ]
+    }
+    'redhat': {
+      $static_asset_compiler_packages = [
+        # TODO CentOS doesn't have closure-compiler
+        'yuicompressor',
+        'gettext',
+      ]
+    }
+    default: {
+      fail('osfamily not supported')
+    }
+  }
 
   zulip::safepackage { $static_asset_compiler_packages: ensure => 'installed' }
 }