[helm] Add the force_update arg (#509)

[helm] Add the force_update arg

Depends-On: ansible/ansible-zuul-jobs#1648
Depends-On: #522
SUMMARY
Sometimes a Helm repo needs to be updated with a new URL. The helm repo add command allows for this with the --force-update flag:
      --force-update               replace (overwrite) the repo if it already exists


ISSUE TYPE

Feature Pull Request - Closes #491

COMPONENT NAME
kubernetes.core.helm_repository
ADDITIONAL INFORMATION

Reviewed-by: Mor Cohen <morcohen1201@gmail.com>
Reviewed-by: Mike Graves <mgraves@redhat.com>

changelogs/fragments/509-helm-repo-add-force_update-argument.yaml

@@ -0,0 +1,3 @@
+---
+minor_changes:
+  - helm_repository - Ability to replace (overwrite) the repo if it already exists by forcing (https://github.com/ansible-collections/kubernetes.core/issues/491).

plugins/modules/helm_repository.py

@@ -112,6 +112,13 @@
     type: raw
     aliases: [ kubeconfig_path ]
     version_added: "2.4.0"
+  force_update:
+    description:
+    - Whether or not to replace (overwrite) the repo if it already exists.
+    type: bool
+    aliases: [ force ]
+    default: False
+    version_added: "2.4.0"
 """
 
 EXAMPLES = r"""
@@ -218,6 +225,7 @@ def install_repository(
     repository_username,
     repository_password,
     pass_credentials,
+    force_update,
 ):
     install_command = command + " repo add " + repository_name + " " + repository_url
 
@@ -228,6 +236,9 @@ def install_repository(
     if pass_credentials:
         install_command += " --pass-credentials"
 
+    if force_update:
+        install_command += " --force-update"
+
     return install_command
 
 
@@ -250,6 +261,7 @@ def argument_spec():
                 default="present", choices=["present", "absent"], aliases=["state"]
             ),
             pass_credentials=dict(type="bool", default=False, no_log=True),
+            force_update=dict(type="bool", default=False, aliases=["force"]),
         )
     )
     return arg_spec
@@ -277,6 +289,7 @@ def main():
     repo_password = module.params.get("repo_password")
     repo_state = module.params.get("repo_state")
     pass_credentials = module.params.get("pass_credentials")
+    force_update = module.params.get("force_update")
 
     helm_cmd = get_helm_binary(module)
 
@@ -286,14 +299,15 @@ def main():
         helm_cmd = delete_repository(helm_cmd, repo_name)
         changed = True
     elif repo_state == "present":
-        if repository_status is None:
+        if repository_status is None or force_update:
             helm_cmd = install_repository(
                 helm_cmd,
                 repo_name,
                 repo_url,
                 repo_username,
                 repo_password,
                 pass_credentials,
+                force_update,
             )
             changed = True
         elif repository_status["url"] != repo_url:

tests/integration/targets/helm/tasks/tests_repository.yml

@@ -42,6 +42,19 @@
     that:
       - repository_errors is failed
 
+- name: Succesfully add repository with the same name when forcing
+  helm_repository:
+    binary_path: "{{ helm_binary }}"
+    name: test_helm_repo
+    repo_url: "{{ chart_test_repo }}"
+    force: true
+  register: repository
+
+- name: Assert that test_helm_repo repository is changed
+  assert:
+    that:
+      - repository is changed
+
 - name: Remove test_helm_repo chart repository
   helm_repository:
     binary_path: "{{ helm_binary }}"