Add hcloud_volume_facts (#54666)

* Add hcloud_volume_facts

* Fix server name

test/integration/targets/hcloud_volume_facts/aliases

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+cloud/hcloud
+unsupported

test/integration/targets/hcloud_volume_facts/defaults/main.yml

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+# Copyright: (c) 2019, Hetzner Cloud GmbH <info@hetzner-cloud.de>
+# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
+---
+hcloud_prefix: "tests"
+hcloud_volume_name: "{{hcloud_prefix}}-integ"

test/integration/targets/hcloud_volume_facts/tasks/main.yml

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+# Copyright: (c) 2019, Hetzner Cloud GmbH <info@hetzner-cloud.de>
+# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
+---
+- name: setup ensure volume is absent
+  hcloud_volume:
+    name: "{{ hcloud_volume_name }}"
+    state: absent
+  register: result
+
+- name: test gather hcloud volume facts - empty resources
+  hcloud_volume_facts:
+- name: verify test gather hcloud volume facts - empty resources
+  assert:
+    that:
+      - ansible_facts.hcloud_volume_facts | count == 0
+
+- name: setup volume
+  hcloud_volume:
+    name: "{{hcloud_volume_name}}"
+    size: 10
+    location: "fsn1"
+    labels:
+      key: value
+  register: main_volume
+- name: verify setup volume
+  assert:
+    that:
+      - main_volume is changed
+
+- name: test gather hcloud volume facts in check mode
+  hcloud_volume_facts:
+  check_mode: yes
+
+- name: verify test gather hcloud volume facts in check mode
+  assert:
+    that:
+      - ansible_facts.hcloud_volume_facts|selectattr('name','equalto','{{ hcloud_volume_name }}') | list | count == 1
+
+- name: test gather hcloud volume facts with correct label selector
+  hcloud_volume_facts:
+    label_selector: "key=value"
+- name: verify test gather hcloud volume with correct label selector
+  assert:
+    that:
+      - ansible_facts.hcloud_volume_facts|selectattr('name','equalto','{{ hcloud_volume_name }}') | list | count == 1
+
+- name: test gather hcloud volume facts with wrong label selector
+  hcloud_volume_facts:
+    label_selector: "key!=value"
+- name: verify test gather hcloud volume with wrong label selector
+  assert:
+    that:
+      - ansible_facts.hcloud_volume_facts | list | count == 0
+
+- name: test gather hcloud volume facts with correct name
+  hcloud_volume_facts:
+    name: "{{hcloud_volume_name}}"
+- name: verify test gather hcloud volume with correct name
+  assert:
+    that:
+      - ansible_facts.hcloud_volume_facts|selectattr('name','equalto','{{ hcloud_volume_name }}') | list | count == 1
+
+- name: test gather hcloud volume facts with wrong name
+  hcloud_volume_facts:
+      name: "{{hcloud_volume_name}}1"
+- name: verify test gather hcloud volume with wrong name
+  assert:
+    that:
+      - ansible_facts.hcloud_volume_facts | list | count == 0
+
+- name: test gather hcloud volume facts with correct id
+  hcloud_volume_facts:
+    id: "{{main_volume.hcloud_volume.id}}"
+- name: verify test gather hcloud volume with correct id
+  assert:
+    that:
+      - ansible_facts.hcloud_volume_facts|selectattr('name','equalto','{{ hcloud_volume_name }}') | list | count == 1
+
+- name: test gather hcloud volume facts with wrong id
+  hcloud_volume_facts:
+      name: "4711"
+- name: verify test gather hcloud volume with wrong id
+  assert:
+    that:
+      - ansible_facts.hcloud_volume_facts | list | count == 0
+
+- name: cleanup
+  hcloud_volume:
+    name: "{{ hcloud_volume_name }}"
+    state: absent
+  register: result
+- name: verify cleanup
+  assert:
+    that:
+    - result is success