Ensure that RedHat/SUSE only use a distro install

Previously the 'distro' install method was implemented as the
default for CentOS and SUSE, however, some remnants were left
behind, making the configuration confusing and causing some
issues due to the gpg verification on RedHat trying to use the
RabbitMQ gpg check.

Rather than try and keep the many confusing installation methods
for these distributions, we simply remove the other options and
all the config entries related to it.

As part of this, we need to clean up the functional tests which
previously implemented checks based on the 'file' install type
which is no longer used by any distribution.

Change-Id: I28199ce149f6893d688d11177ec950b17dbf0886

tests/test-rabbitmq-functional.yml

@@ -20,32 +20,6 @@
   gather_facts: true
   become: true
   tasks:
-
-    - name: Gather variables for each operating system
-      include_vars: "{{ item }}"
-      with_first_found:
-        - "{{ playbook_dir }}/../vars/{{ ansible_distribution | lower }}-{{ ansible_distribution_version | lower }}.yml"
-        - "{{ playbook_dir }}/../vars/{{ ansible_distribution | lower }}-{{ ansible_distribution_major_version | lower }}.yml"
-        - "{{ playbook_dir }}/../vars/{{ ansible_os_family | lower }}-{{ ansible_distribution_major_version | lower }}.yml"
-        - "{{ playbook_dir }}/../vars/{{ ansible_distribution | lower }}.yml"
-        - "{{ playbook_dir }}/../vars/{{ ansible_os_family | lower }}.yml"
-
-    - name: Set rabbitmq_package_url
-      set_fact:
-        rabbitmq_package_url: "{{ _rabbitmq_package_url }}"
-
-    - name: Set rabbitmq_package_version
-      set_fact:
-        rabbitmq_package_version: "{{ _rabbitmq_package_version }}"
-
-    - name: Set rabbitmq_release_version
-      set_fact:
-        rabbitmq_release_version: "{{ _rabbitmq_release_version }}"
-
-    - name: Set rabbitmq_install_method
-      set_fact:
-        rabbitmq_install_method: "{{ _rabbitmq_install_method }}"
-
     - name: Check rabbitmq is running
       command: "pgrep -f rabbit"
       delegate_to: "{{ item }}"
@@ -102,12 +76,6 @@
           - hostvars['container1']['rabbitmq_ssl_cert_checksum'] == hostvars['container2']['rabbitmq_ssl_cert_checksum'] == hostvars['container3']['rabbitmq_ssl_cert_checksum']
           - hostvars['container1']['rabbitmq_ssl_key_checksum'] == hostvars['container2']['rabbitmq_ssl_key_checksum'] == hostvars['container3']['rabbitmq_ssl_key_checksum']
 
-    - name: Ensure expected version of rabbitmq is running
-      assert:
-        that: rabbitmqctl_status.stdout | search ("rabbit,\"RabbitMQ\",\"{{ _rabbitmq_release_version }}\"")
-      when:
-        - "rabbitmq_install_method == 'file'"
-
     - name: Get the policy list
       command: rabbitmqctl -q list_policies
       register: rabbitmq_policies_output