Rename from community.kubernetes to kubernetes.core (#6)

* Rename from community.kubernetes to kubernetes.core

This goes through and renames community.kubernetes to kubernetes.core.
Most of this was generated from the downstream build script that was
used on the community repository, plus whatever hand edits I could find
that were needed.

The downstream build and test process has also been removed as this
repository is now the downstream repository.

* Fix CONTRIBUTING.md

plugins/modules/k8s.py

@@ -24,17 +24,17 @@ description:
   - Pass the object definition from a source file or inline. See examples for reading
     files and using Jinja templates or vault-encrypted files.
   - Access to the full range of K8s APIs.
-  - Use the M(community.kubernetes.k8s_info) module to obtain a list of items about an object of type C(kind)
+  - Use the M(kubernetes.core.k8s_info) module to obtain a list of items about an object of type C(kind)
   - Authenticate using either a config file, certificates, password or token.
   - Supports check mode.
 
 extends_documentation_fragment:
-  - community.kubernetes.k8s_state_options
-  - community.kubernetes.k8s_name_options
-  - community.kubernetes.k8s_resource_options
-  - community.kubernetes.k8s_auth_options
-  - community.kubernetes.k8s_wait_options
-  - community.kubernetes.k8s_delete_options
+  - kubernetes.core.k8s_state_options
+  - kubernetes.core.k8s_name_options
+  - kubernetes.core.k8s_resource_options
+  - kubernetes.core.k8s_auth_options
+  - kubernetes.core.k8s_wait_options
+  - kubernetes.core.k8s_delete_options
 
 notes:
   - If your OpenShift Python library is not 0.9.0 or newer and you are trying to
@@ -132,14 +132,14 @@ requirements:
 
 EXAMPLES = r'''
 - name: Create a k8s namespace
-  community.kubernetes.k8s:
+  kubernetes.core.k8s:
     name: testing
     api_version: v1
     kind: Namespace
     state: present
 
 - name: Create a Service object from an inline definition
-  community.kubernetes.k8s:
+  kubernetes.core.k8s:
     state: present
     definition:
       apiVersion: v1
@@ -161,7 +161,7 @@ EXAMPLES = r'''
           port: 8000
 
 - name: Remove an existing Service object
-  community.kubernetes.k8s:
+  kubernetes.core.k8s:
     state: absent
     api_version: v1
     kind: Service
@@ -171,24 +171,24 @@ EXAMPLES = r'''
 # Passing the object definition from a file
 
 - name: Create a Deployment by reading the definition from a local file
-  community.kubernetes.k8s:
+  kubernetes.core.k8s:
     state: present
     src: /testing/deployment.yml
 
 - name: >-
     Read definition file from the Ansible controller file system.
     If the definition file has been encrypted with Ansible Vault it will automatically be decrypted.
-  community.kubernetes.k8s:
+  kubernetes.core.k8s:
     state: present
     definition: "{{ lookup('file', '/testing/deployment.yml') | from_yaml }}"
 
 - name: Read definition template file from the Ansible controller file system
-  community.kubernetes.k8s:
+  kubernetes.core.k8s:
     state: present
     template: '/testing/deployment.j2'
 
 - name: Read definition template file from the Ansible controller file system that uses custom start/end strings
-  community.kubernetes.k8s:
+  kubernetes.core.k8s:
     state: present
     template:
       path: '/testing/deployment.j2'
@@ -196,14 +196,14 @@ EXAMPLES = r'''
       variable_end_string: ']]'
 
 - name: fail on validation errors
-  community.kubernetes.k8s:
+  kubernetes.core.k8s:
     state: present
     definition: "{{ lookup('template', '/testing/deployment.yml') | from_yaml }}"
     validate:
       fail_on_error: yes
 
 - name: warn on validation errors, check for unexpected properties
-  community.kubernetes.k8s:
+  kubernetes.core.k8s:
     state: present
     definition: "{{ lookup('template', '/testing/deployment.yml') | from_yaml }}"
     validate:
@@ -218,13 +218,13 @@ EXAMPLES = r'''
     mode: '0664'
 
 - name: Apply metrics-server manifest to the cluster.
-  community.kubernetes.k8s:
+  kubernetes.core.k8s:
     state: present
     src: ~/metrics-server.yaml
 
 # Wait for a Deployment to pause before continuing
 - name: Pause a Deployment.
-  community.kubernetes.k8s:
+  kubernetes.core.k8s:
     definition:
       apiVersion: apps/v1
       kind: Deployment
@@ -280,8 +280,8 @@ result:
 
 import copy
 
-from ansible_collections.community.kubernetes.plugins.module_utils.ansiblemodule import AnsibleModule
-from ansible_collections.community.kubernetes.plugins.module_utils.args_common import (
+from ansible_collections.kubernetes.core.plugins.module_utils.ansiblemodule import AnsibleModule
+from ansible_collections.kubernetes.core.plugins.module_utils.args_common import (
     AUTH_ARG_SPEC, WAIT_ARG_SPEC, NAME_ARG_SPEC, COMMON_ARG_SPEC, RESOURCE_ARG_SPEC, DELETE_OPTS_ARG_SPEC)
 
 
@@ -336,7 +336,7 @@ def main():
         ('template', 'src'),
     ]
     module = AnsibleModule(argument_spec=argspec(), mutually_exclusive=mutually_exclusive, supports_check_mode=True)
-    from ansible_collections.community.kubernetes.plugins.module_utils.common import (
+    from ansible_collections.kubernetes.core.plugins.module_utils.common import (
         K8sAnsibleMixin, get_api_client)
 
     k8s_ansible_mixin = K8sAnsibleMixin(module)