Add worker to collect various PortAccessEntity (NAC) attributes (PR #937, partially implements #887)

* Add macsuck worker to collect various PortAccessEntity (NAC) attributes

* Incorporate PAE feedback on #937

 * missing Result/Device.pm column added
 * pae_is... columns instead of pae_capabilities
 * moved most code to Util/PortAccessEntity.pm so the update can
   be done in discover and macsuck

* Refactor PAE attributes during discover as separate Plugin

* PortAccessEntity: don't use device->dns in log string

* Fix "Experimental keys on scalar is now forbidden" test failure

* Revamp pae_control and add missing attribute

 - device.pae_control (text) is now device.pae_is_enabled (bool)
 - also store pae_authconfig_port_control (port mode auto/force(un)Auth)

* Fix "Experimental keys on scalar is now forbidden" test failure

 - ... again because of botched merge
 - at least perlgolfed away a set of curly braces

* Update PortAccessEntity.pm

* Incorporate @ollyg PR feedback

Co-authored-by: Christian Ramseyer <ramseyer@netnea.com>

lib/App/Netdisco/DB/Result/Device.pm

@@ -83,6 +83,8 @@ __PACKAGE__->add_columns(
   { data_type => "timestamp", is_nullable => 1 },
   "is_pseudo",
   { data_type => "boolean", is_nullable => 0, default_value => \"false" },
+  "pae_is_enabled",
+  { data_type => "boolean", is_nullable => 1 },
 );
 __PACKAGE__->set_primary_key("ip");