puppet: Move to setup_disks to postgres_common.

The tooling should now be run no matter if the node is a primary or
replica.

puppet/zulip_ops/manifests/postgres_common.pp

@@ -1,6 +1,9 @@
 class zulip_ops::postgres_common {
   include zulip::postgres_common
 
+  $common_packages = ['xfsprogs']
+  package { $common_packages: ensure => 'installed' }
+
   $wal_g_version = '0.2.15'
   $wal_g_hash = 'ea33c2341d7bfb203c6948590c29834c013ab06a28c7a2b236a73d906f785c84'
   exec {'install-wal-g':
@@ -36,5 +39,18 @@ class zulip_ops::postgres_common {
     refreshonly => true,
   }
 
+  file { '/root/setup_disks.sh':
+    ensure => file,
+    owner  => 'root',
+    group  => 'root',
+    mode   => '0744',
+    source => 'puppet:///modules/zulip_ops/postgresql/setup_disks.sh',
+  }
+
+  exec { 'setup_disks':
+    command => '/root/setup_disks.sh',
+    require => Package["postgresql-${zulip::base::postgres_version}", 'xfsprogs'],
+    unless  => 'test $(readlink /var/lib/postgresql) = "/srv/postgresql/" -a -d /srv/postgresql',
+  }
 
 }

puppet/zulip_ops/manifests/postgres_master.pp

@@ -2,11 +2,6 @@ class zulip_ops::postgres_master {
   include zulip_ops::base
   include zulip_ops::postgres_appdb
 
-  $master_packages = [# Packages needed for disk + RAID configuration
-                      'xfsprogs',
-                      ]
-  package { $master_packages: ensure => 'installed' }
-
   file { '/etc/sysctl.d/40-postgresql.conf':
     ensure => file,
     owner  => 'root',
@@ -15,20 +10,6 @@ class zulip_ops::postgres_master {
     source => 'puppet:///modules/zulip_ops/postgresql/40-postgresql.conf.master',
   }
 
-  file { '/root/setup_disks.sh':
-    ensure => file,
-    owner  => 'root',
-    group  => 'root',
-    mode   => '0744',
-    source => 'puppet:///modules/zulip_ops/postgresql/setup_disks.sh',
-  }
-
-  exec { 'setup_disks':
-    command => '/root/setup_disks.sh',
-    require => Package["postgresql-${zulip::base::postgres_version}", 'xfsprogs'],
-    unless  => 'test $(readlink /var/lib/postgresql) = "/srv/postgresql/" -a -d /srv/postgresql',
-  }
-
   # This one will probably fail most of the time
   exec {'give_nagios_user_access':
     # lint:ignore:140chars