How to do it...

1. Create a new playbook called pb_net_validate.yml and add the following task to store all SVI IP addresses:

---
  - name: "PLay 1: Validate Network Reachability"
    hosts: core,wan
    vars:
      host_id: 10
      packet_count: 10
    tasks:
      - name: "Get all SVI Prefixes"
        set_fact:
          all_svi_prefixes: "{{ svi_interfaces | selectattr('vrrp') |
                                map(attribute='ipv4') | list }}"
        run_once: yes
        delegate_to: localhost
        tags: svi

2. Update the pb_net_validate.yml playbook with the following task to ping all the SVI interfaces:

      - name: "Ping Hosts in all VLANs"
        ios_ping:
          dest: "{{ item | ipaddr(10) | ipaddr('address') }}"
        loop: "{{ all_svi_prefixes }}"
        ignore_errors: yes
        tags: svi