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>

share/config.yml

@@ -443,6 +443,7 @@ worker_plugins:
   - 'Discover::Neighbors::Routed'
   - 'Discover::PortPower'
   - 'Discover::PortProperties'
+  - 'Discover::PortProperties::PortAccessEntity'
   - 'Discover::Properties'
   - 'Discover::VLANs'
   - 'Discover::Wireless'
@@ -462,6 +463,7 @@ worker_plugins:
   - 'Macsuck::Hooks'
   - 'Macsuck::Nodes'
   - 'Macsuck::WirelessNodes'
+  - 'Macsuck::Nodes::PortAccessEntity'
   - 'Macwalk'
   - 'MakeRancidConf'
   - 'Nbtstat'