Install encapic ENC client on puppet masters (#525)

The VM masters classify through the cobbler ENC while the k8s compilers
already use encapi. Install the client ahead of that cutover;
external_nodes still points at cobbler-enc, so classification is unchanged.

- pin the encapic package to 0.2.0 via profiles::packages::include
- add profiles::puppet::encapic managing /etc/encapic/encapic.conf from a
  hiera-driven ENCAPI_URL, ordered after Package['encapic'] so the config is
  written once the RPM that owns the path is installed
- include the class from profiles::puppet::puppetmaster

Requires encapic 0.2.0 in the rpm-internal repo.

Reviewed-on: #525
Co-authored-by: unkin-agent <unkin-agent@unkin.net>
Co-committed-by: unkin-agent <unkin-agent@unkin.net>

hieradata/roles/infra/puppet/master.yaml

@@ -26,6 +26,15 @@ profiles::puppet::cobbler_enc::packages:
   - 'requests'
   - 'PyYAML'
 profiles::puppet::enc::repo: https://git.service.au-syd1.consul/unkinben/puppet-enc.git
+
+# encapic is installed alongside the cobbler ENC; external_nodes still points
+# at cobbler-enc. Deep-merged with the entries in roles/infra/puppet.yaml.
+profiles::packages::include:
+  encapic:
+    ensure: '0.2.0'
+
+profiles::puppet::encapic::encapi_url: https://encapi.k8s.syd1.au.unkin.net
+
 profiles::puppet::r10k::r10k_repo: https://git.unkin.net/unkin/puppet-r10k.git
 profiles::puppet::g10k::bin_path: '/usr/bin/g10k'
 profiles::puppet::g10k::cfg_path: '/etc/puppetlabs/r10k/r10k.yaml'