Fix Provider Test Site Kustomization Errors

Due to change [1] and [2], deployment of capd is broken and resulting in
kustomization errors as reported in https://github.com/airshipit/airshipctl/issues/565.

This PS fixes the kustomization errors related to phasePlan
and function entrypoints for capd, capg, capz and capo providers.

[1]: https://review.opendev.org/c/airship/airshipctl/+/790202
[2]: https://review.opendev.org/c/airship/airshipctl/+/791715

Relates-To: #565
Closes: #565
Change-Id: Ia680131f4d1c43643e05f413dee649aa5011f793

manifests/site/az-test-site/phases/kustomization.yaml

@@ -1,7 +1,6 @@
 resources:
   - ../../../phases
-  - ../../function/airshipctl-base-catalogues
-patchesStrategicMerge:
+  - ../../../function/airshipctl-base-catalogues
   - plan.yaml
 patchesJson6902:
   - target:

manifests/site/docker-test-site/phases/kustomization.yaml

@@ -1,7 +1,6 @@
 resources:
   - ../../../phases
-  - ../../function/airshipctl-base-catalogues
-patchesStrategicMerge:
+  - ../../../function/airshipctl-base-catalogues
   - plan.yaml
 patchesJson6902:
   - target:

manifests/site/gcp-test-site/phases/kustomization.yaml

@@ -1,7 +1,6 @@
 resources:
   - ../../../phases
-  - ../../function/airshipctl-base-catalogues
-patchesStrategicMerge:
+  - ../../../function/airshipctl-base-catalogues
   - plan.yaml
 patchesJson6902:
   - target:

manifests/site/openstack-test-site/phases/kustomization.yaml

@@ -1,7 +1,6 @@
 resources:
   - ../../../phases
-  - ../../function/airshipctl-base-catalogues
-patchesStrategicMerge:
+  - ../../../function/airshipctl-base-catalogues
   - plan.yaml
 patchesJson6902:
   - target: