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branko

MAR-148: Improve the SSH connectivity tests in backup_server role to be more reliable:

- Introduce a session-level fixture for setting permissions for client
SSH private keys (fixes errors related to SSH requesting tighter
permissions).
- Add assertions for the tests that verify the backup clients cannot
connect to the regular SSH server in case the SSH private keys do
not have correct permissions (just in case).

---
- name: Create
  hosts: localhost
  connection: local
  gather_facts: false
  no_log: "{{ not lookup('env', 'MOLECULE_DEBUG') | bool }}"
  vars:
    molecule_file: "{{ lookup('env', 'MOLECULE_FILE') }}"
    molecule_instance_config: "{{ lookup('env', 'MOLECULE_INSTANCE_CONFIG') }}"
    molecule_yml: "{{ lookup('file', molecule_file) | molecule_from_yaml }}"
  tasks:
    - name: Create molecule instance(s)
      molecule_vagrant:
        instance_name: "{{ item.name }}"
        instance_interfaces: "{{ item.interfaces | default(omit) }}"
        instance_raw_config_args: "{{ item.instance_raw_config_args | default(omit) }}"

        platform_box: "{{ item.box }}"
        platform_box_version: "{{ item.box_version | default(omit) }}"
        platform_box_url: "{{ item.box_url | default(omit) }}"

        provider_name: "{{ molecule_yml.driver.provider.name }}"
        provider_memory: "{{ item.memory | default(omit) }}"
        provider_cpus: "{{ item.cpus | default(omit) }}"
        provider_raw_config_args: "{{ item.raw_config_args | default(omit) }}"

        state: up
      register: server
      with_items: "{{ molecule_yml.platforms }}"

    # Mandatory configuration for Molecule to function.

    - name: Populate instance config dict
      set_fact:
        instance_conf_dict: {
          'instance': "{{ item.Host }}",
          'address': "{{ item.HostName }}",
          'user': "{{ item.User }}",
          'port': "{{ item.Port }}",
          'identity_file': "{{ item.IdentityFile }}", }
      with_items: "{{ server.results }}"
      register: instance_config_dict
      when: server.changed | bool

    - name: Convert instance config dict to a list
      set_fact:
        instance_conf: "{{ instance_config_dict.results | map(attribute='ansible_facts.instance_conf_dict') | list }}"
      when: server.changed | bool

    - name: Dump instance config
      copy:
        # NOTE(retr0h): Workaround for Ansible 2.2.
        #               https://github.com/ansible/ansible/issues/20885
        content: "{{ instance_conf | to_json | from_json | molecule_to_yaml | molecule_header }}"
        dest: "{{ molecule_instance_config }}"
      when: server.changed | bool