add Test::File::ShareDir::Dist to help Travis build

Build.PL

@@ -88,6 +88,7 @@ Module::Build->new(
   test_requires => {
     'Test::More' => '0.88',
     'Env::Path'  => '0',
+    'Test::File::ShareDir::Dist' => '0',
   },
   script_files => [
     'bin/nd-import-topology',

xt/10-sort_port.t

@@ -2,6 +2,7 @@
 
 use strict; use warnings FATAL => 'all';
 use Test::More 0.88;
+use Test::File::ShareDir::Dist { 'App-Netdisco' => 'share/' };
 
 BEGIN {
     use_ok( 'App::Netdisco::Util::Web', 'sort_port' );