Added modified supervisor puppet manifest

Removed TRAVIS env var

custom_zulip_files/puppet/zulip/manifests/supervisor.pp

@@ -0,0 +1,23 @@
+class zulip::supervisor {
+  $supervisor_packages = [# Needed to run supervisor
+                          "supervisor",
+                          ]
+  package { $supervisor_packages: ensure => "installed" }
+
+  file { "/etc/supervisor/supervisord.conf":
+    require => Package[supervisor],
+    ensure => file,
+    owner => "root",
+    group => "root",
+    mode => 644,
+    source => "puppet:///modules/zulip/supervisor/supervisord.conf",
+  }
+
+  if $zulip::base::release_name == "xenial" {
+    exec {"enable supervisor":
+      unless => "systemctl is-enabled supervisor",
+      command => "systemctl enable supervisor",
+      require => Package["supervisor"],
+    }
+  }
+}