fix role tests

Ansible role tests were failing due to ansible-lint reporting
multiple errors.

Fixing those errors resolves the failing tests.

Switching gcsfuse to use gcloud's bootstrap to follow the current
docker install instructions.

Removing centos as it's a discontinued distribution.

Adding a check to ensure integration tests are skipped unless they
are run by a branch (a public fork does not pass required
integration test credentials).

roles/gcsfuse/tasks/debian.yml

@@ -1,24 +1,24 @@
 ---
 - name: gcsfuse | Ensure gpg is installed
-  apt: name=gnupg
+  ansible.builtin.apt: name=gnupg
   register: task_result
   until: task_result is success
   retries: 10
   delay: 2
 
 - name: gcsfuse | Add an apt signing key
-  apt_key:
+  ansible.builtin.apt_key:
     url: https://packages.cloud.google.com/apt/doc/apt-key.gpg
     state: present
 
 - name: gcsfuse | Add the apt repository
-  apt_repository:
+  ansible.builtin.apt_repository:
     repo: deb http://packages.cloud.google.com/apt gcsfuse-{{ ansible_distribution_release }} main
     state: present
     filename: gcsfuse
 
 - name: gcsfuse | Install gcsfuse
-  apt: name=gcsfuse update_cache=yes
+  ansible.builtin.apt: name=gcsfuse update_cache=yes
   register: task_result
   until: task_result is success
   retries: 10

roles/gcsfuse/tasks/main.yml

@@ -1,4 +1,4 @@
 ---
 # tasks file for google.cloud.gcsfuse
-
-- include_tasks: "{{ ansible_os_family|lower }}.yml"
+- name: main
+  ansible.builtin.include_tasks: "{{ ansible_os_family|lower }}.yml"