default ipv6_listen_port to listen_port

in 99% of the deployments both ports are identical. to make this easier
for the users we can just tell puppet that the default value for
$ipv6_listen_port is the value of $listen_port. That makes it easier for
people that want their dual stack application to listen on a nonstandard
port. They only need to set it once.

Author: bastelfreak

manifests/resource/mailhost.pp

@@ -132,7 +132,7 @@
   Optional[String] $listen_options               = undef,
   Boolean $ipv6_enable                           = false,
   Variant[Array[String], String] $ipv6_listen_ip = '::',
-  Stdlib::Port $ipv6_listen_port                 = 80,
+  Stdlib::Port $ipv6_listen_port                 = $listen_port,
   String $ipv6_listen_options                    = 'default ipv6only=on',
   Boolean $ssl                                   = false,
   Optional[String] $ssl_cert                     = undef,

manifests/resource/server.pp

@@ -284,7 +284,7 @@
 define nginx::resource::server (
   Enum['absent', 'present'] $ensure                                              = 'present',
   Variant[Array, String] $listen_ip                                              = '*',
-  Integer $listen_port                                                           = 80,
+  Stdlib::Port $listen_port                                                      = 80,
   Optional[String] $listen_options                                               = undef,
   Boolean $listen_unix_socket_enable                                             = false,
   Variant[Array[Stdlib::Absolutepath], Stdlib::Absolutepath] $listen_unix_socket = '/var/run/nginx.sock',
@@ -294,7 +294,7 @@
   Array $location_deny                                                           = [],
   Boolean $ipv6_enable                                                           = false,
   Variant[Array, String] $ipv6_listen_ip                                         = '::',
-  Integer $ipv6_listen_port                                                      = 80,
+  Stdlib::Port $ipv6_listen_port                                                 = $listen_port,
   String $ipv6_listen_options                                                    = 'default ipv6only=on',
   Hash $add_header                                                               = {},
   Boolean $ssl                                                                   = false,

manifests/resource/streamhost.pp

@@ -56,7 +56,7 @@
   Optional[String] $listen_options             = undef,
   Boolean $ipv6_enable                         = false,
   Variant[Array, String] $ipv6_listen_ip       = '::',
-  Integer $ipv6_listen_port                    = 80,
+  Integer $ipv6_listen_port                    = $listen_port,
   String $ipv6_listen_options                  = 'default ipv6only=on',
   $proxy                                       = undef,
   String $proxy_read_timeout                   = $nginx::proxy_read_timeout,

spec/defines/resource_mailhost_spec.rb

@@ -61,19 +61,19 @@
               title: 'should enable IPv6',
               attr: 'ipv6_enable',
               value: true,
-              match: '  listen                [::]:80 default ipv6only=on;'
+              match: '  listen                [::]:25 default ipv6only=on;'
             },
             {
               title: 'should not enable IPv6',
               attr: 'ipv6_enable',
               value: false,
-              notmatch: %r{  listen                \[::\]:80 default ipv6only=on;}
+              notmatch: %r{  listen                \[::\]:25 default ipv6only=on;}
             },
             {
               title: 'should set the IPv6 listen IP',
               attr: 'ipv6_listen_ip',
               value: '2001:0db8:85a3:0000:0000:8a2e:0370:7334',
-              match: '  listen                [2001:0db8:85a3:0000:0000:8a2e:0370:7334]:80 default ipv6only=on;'
+              match: '  listen                [2001:0db8:85a3:0000:0000:8a2e:0370:7334]:25 default ipv6only=on;'
             },
             {
               title: 'should set the IPv6 listen port',
@@ -85,7 +85,7 @@
               title: 'should set the IPv6 listen options',
               attr: 'ipv6_listen_options',
               value: 'spdy',
-              match: '  listen                [::]:80 spdy;'
+              match: '  listen                [::]:25 spdy;'
             },
             {
               title: 'should set servername(s)',