fix: add params to update cache in agnocast ansible role (#6083)

* fix: add params to update cache in agnocast ansible role

Signed-off-by: Fumiya Watanabe <fumiya.watanabe.44@gmail.com>

* fix: increase max delay

Signed-off-by: Fumiya Watanabe <fumiya.watanabe.44@gmail.com>

* fix: change update_chache to false

Signed-off-by: Fumiya Watanabe <fumiya.watanabe.44@gmail.com>

* fix: change IPv6 setting temporary

Signed-off-by: Fumiya Watanabe <fumiya.watanabe.44@gmail.com>

* style(pre-commit): autofix

* fix: truthy value

Signed-off-by: Fumiya Watanabe <fumiya.watanabe.44@gmail.com>

* fix: remove redundant quotes

Signed-off-by: Fumiya Watanabe <fumiya.watanabe.44@gmail.com>

* fix: deal with pre-commit-ansible

Signed-off-by: Fumiya Watanabe <fumiya.watanabe.44@gmail.com>

* fix: deal with pre-commit-ansible

Signed-off-by: Fumiya Watanabe <fumiya.watanabe.44@gmail.com>

* fix: deal with pre-commit-ansible

Signed-off-by: Fumiya Watanabe <fumiya.watanabe.44@gmail.com>

* Update ansible/roles/agnocast/tasks/main.yaml

---------

Signed-off-by: Fumiya Watanabe <fumiya.watanabe.44@gmail.com>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Co-authored-by: Yutaka Kondo <yutaka.kondo@youtalk.jp>

Author: 3 people

ansible/roles/agnocast/tasks/main.yaml

@@ -4,10 +4,38 @@
     state: present
   become: true
 
-- name: Add agnocast PPA repository
+# TODO(rej55, sykwer): IPv6 support
+- name: Save current IPv6 settings
+  ansible.builtin.shell: |
+    sysctl net.ipv6.conf.all.disable_ipv6
+    sysctl net.ipv6.conf.default.disable_ipv6
+  register: ipv6_settings
+  changed_when: false
+  become: true
+
+- name: Temporarily disable IPv6
+  ansible.posix.sysctl:
+    name: "{{ item.name }}"
+    value: 1
+    sysctl_set: true
+    state: present
+  loop:
+    - { name: net.ipv6.conf.all.disable_ipv6 }
+    - { name: net.ipv6.conf.default.disable_ipv6 }
+  become: true
+
+- name: Add agnocast PPA repository while IPv6 is disabled
   ansible.builtin.apt_repository:
     repo: ppa:t4-system-software/agnocast
     state: present
+    update_cache: false
+  become: true
+
+- name: Restore original IPv6 settings # noqa: no-changed-when
+  ansible.builtin.command: >
+    sysctl -w {{ item }}
+  loop: "{{ ipv6_settings.stdout_lines }}"
+  when: item is search('=0')
   become: true
 
 - name: Update apt cache