test compilation of all scripts and modules (#537)

* test compilation of all scripts and modules passes

* try adding NetSNMP::default_store

* try adding NetSNMP::default_store

* travis test all branches

* make Configuration.pm safe for tests

* remove dep

* try adding net-snmp

* dist: xenial

* try building Net-SNMP locally

* no need for Try::Tiny

* allow test to pass for DPP:p

* better testing setup for session cookies

* yay! working compile tests for ALL!

lib/App/Netdisco/Worker/Plugin/DumpConfig.pm

@@ -11,7 +11,8 @@ register_worker({ phase => 'main' }, sub {
   my $extra = $job->extra;
 
   my $config = config();
-  p ($extra ? $config->{$extra} : $config);
+  my $dump = ($extra ? $config->{$extra} : $config);
+  p $dump;
   return Status->done('Dumped config');
 });