Deduplicate airshipctl manifest networking

Deduplicate networking definitions inside of airshipctl functions,
and make the values driveable via a catalogue.

Changes:
* Removed BMO patches at site level; drive through catalogue instead.
* Added separate entrypoints for ephemeral & target site-level.
  catalogue/networking overrides. Ephemeral's kustomizes target's.
* Generalized the commonHostNetworking catalogue into a section in the
  overall networking catalogue.
* Cleaned up catalogue use in general.
* Got rid of some ill-formed Type-level phase definition.
  We should go back soon and define proper Type-level phases.

Change-Id: Iff96ccdcf7ebde4ae55e2b1a9d25dd1cdca0d2c8
Relates-To: https://github.com/airshipit/airshipctl/issues/315

manifests/site/test-site/target/controlplane/control-machine-template-patch.yaml

@@ -1,11 +0,0 @@
----
-apiVersion: infrastructure.cluster.x-k8s.io/v1alpha3
-kind: Metal3MachineTemplate
-metadata:
-  name: cluster-controlplane
-spec:
-  template:
-    spec:
-      image:
-        url: http://10.23.24.1:8099/target-image.qcow2
-        checksum: http://10.23.24.1:8099/target-image.qcow2.md5sum

manifests/site/test-site/target/controlplane/hostgenerator/kustomization.yaml

@@ -3,7 +3,7 @@ kind: Kustomization
 resources:
   - ../../../../../function/hostgenerator-m3
   - ../../../../../function/hardwareprofile-example
-  - ../../../shared/catalogues/
+  - ../../catalogues
   - host-generation.yaml
 
 transformers:

manifests/site/test-site/target/controlplane/kustomization.yaml

@@ -4,11 +4,11 @@ resources:
   # TODO (dukov) It's recocommended to upload BareMetalHost objects separately
   # otherwise nodes will hang in 'registering' state for quite a long time
   - nodes
-  - ../../../../function/airshipctl-catalogues
   - ../../../../function/k8scontrol
-
-patchesStrategicMerge:
-  - control-machine-template-patch.yaml
+  - ../catalogues
 
 commonLabels:
   airshipit.org/stage: initinfra
+
+transformers:
+  - ../../../../function/k8scontrol/replacements