Make role INJECT_FACTS_AS_VARS friendly

Enabled INJECT_FACTS_AS_VARS[1] (which is default behaviour) has very
negative impact on Ansible performance [2].

In order to be able to reduce amount of variables and performance
penalty, role is being adopted to be used with no injected facts

[1] https://docs.ansible.com/ansible/latest/playbook_guide/playbooks_vars_facts.html#ansible-facts
[2] https://github.com/ansible/ansible/issues/73654

Change-Id: I71a326964be7597ebaad0183c3a774321885c6f5

molecule/default/molecule.yml

@@ -41,21 +41,21 @@ provisioner:
           - ip route 10.0.0.0/24 192.168.1.10
         frr_bgpd_config:
           - router bgp 1234
-          - "bgp router-id {{ hostvars['primary']['ansible_' ~ bridge_name | replace('-', '_')]['ipv4']['address'] }}"
-          - "neighbor {{ hostvars['secondary']['ansible_' ~ bridge_name | replace('-', '_')]['ipv4']['address'] }} remote-as 5678"
+          - "bgp router-id {{ hostvars['primary']['ansible_facts'][bridge_name | replace('-', '_')]['ipv4']['address'] }}"
+          - "neighbor {{ hostvars['secondary']['ansible_facts'][bridge_name | replace('-', '_')]['ipv4']['address'] }} remote-as 5678"
           - network 192.168.1.0/24
           - address-family ipv4 unicast
-          - "  neighbor {{ hostvars['secondary']['ansible_' ~ bridge_name | replace('-', '_')]['ipv4']['address'] }} prefix-list pl-allowed-adv out"
+          - "  neighbor {{ hostvars['secondary']['ansible_facts'][bridge_name | replace('-', '_')]['ipv4']['address'] }} prefix-list pl-allowed-adv out"
           - "exit-address-family"
           - ip prefix-list pl-allowed-adv seq 5 permit 192.168.1.0/24
           - ip prefix-list pl-allowed-adv seq 10 deny any
       secondary:
         frr_bgpd_config:
           - router bgp 5678
-          - "bgp router-id {{ hostvars['secondary']['ansible_' ~ bridge_name | replace('-', '_')]['ipv4']['address'] }}"
-          - "neighbor {{ hostvars['primary']['ansible_' ~ bridge_name | replace('-', '_')]['ipv4']['address'] }} remote-as 1234"
+          - "bgp router-id {{ hostvars['secondary']['ansible_facts'][bridge_name | replace('-', '_')]['ipv4']['address'] }}"
+          - "neighbor {{ hostvars['primary']['ansible_facts'][bridge_name | replace('-', '_')]['ipv4']['address'] }} remote-as 1234"
           - address-family ipv4 unicast
-          - "  neighbor {{ hostvars['primary']['ansible_' ~ bridge_name | replace('-', '_')]['ipv4']['address'] }} prefix-list pl-allowed-adv in"
+          - "  neighbor {{ hostvars['primary']['ansible_facts'][bridge_name | replace('-', '_')]['ipv4']['address'] }} prefix-list pl-allowed-adv in"
           - exit-address-family
           - ip prefix-list pl-allowed-adv seq 5 permit 192.168.1.0/24
           - ip prefix-list pl-allowed-adv seq 10 deny any
@@ -64,8 +64,8 @@ provisioner:
     prepare: prepare.yml
     converge: playbook.yml
     verify: verify.yml
-  # config_options:
-  #   defaults:
-  #     inject_facts_as_vars: false
+  config_options:
+    defaults:
+      inject_facts_as_vars: false
 scenario:
   name: default

molecule/default/verify.yml

@@ -26,7 +26,7 @@
     - name: Ping vlans ip address
       shell: |
         set -e
-        ping -c2 "{{ hostvars[inventory_hostname]['ansible_eth1']['ipv4']['address'] }}"
+        ping -c2 "{{ hostvars[inventory_hostname]['ansible_facts']['eth1']['ipv4']['address'] }}"
       changed_when: false
       register: _ping_vlan
       until: _ping_vlan is success

tasks/frr_install.yml

@@ -18,7 +18,7 @@
   become_user: root
   block:
     - name: Apply package management distro specific configuration
-      include_tasks: "frr_install_{{ ansible_pkg_mgr | lower }}.yml"
+      include_tasks: "frr_install_{{ ansible_facts['pkg_mgr'] | lower }}.yml"
 
     - name: Install required distro packages
       package:

tasks/main.yml

@@ -14,7 +14,7 @@
 # limitations under the License.
 
 - name: Gather variables for each operating system
-  include_vars: "{{ ansible_os_family | lower }}.yml"
+  include_vars: "{{ ansible_facts['os_family'] | lower }}.yml"
 
 - name: Create required vlan interfaces
   include_tasks: frr_vlans.yml

templates/frr.conf.j2

@@ -3,7 +3,7 @@
 !
 frr defaults traditional
 !
-hostname {{ ansible_hostname }}
+hostname {{ ansible_facts['hostname'] }}
 log syslog informational
 !
 ! staticd config

vars/debian.yml

@@ -25,7 +25,7 @@ frr_repos_keys:
     state: present
 
 frr_repos:
-  - repo: "deb {{ apt_repo_url | default('https://deb.frrouting.org/frr ' ~ ansible_distribution_release ~ ' frr-stable') }}"
+  - repo: "deb {{ apt_repo_url | default('https://deb.frrouting.org/frr ' ~ ansible_facts['distribution_release'] ~ ' frr-stable') }}"
     state: present
     filename: "frr"