How to do it...

1. Update the group_vars/core.yml file with following data to define the SVI interfaces:

$ cat group_vars/core.yml
<-- Output Trimmed for brevity ------>
svi_interfaces:
  - name: Vlan10
    ipv4: 10.1.10.0/24
    vrrp: yes
    ospf: passive
 -  name: Vlan20
    ipv4: 10.1.20.0/24
    vrrp: yes
    ospf: passive
 -  name: Vlan100
    ipv4: 10.1.100.0/24
    vrrp: yes
    ospf: passive

2. Create core01.yml and core02.yml files under the host_vars folder and add the following content:

$ cat host_vars/core01.yml
 hst_svi_id: 1
 hst_vrrp_priority: 100
$ cat host_vars/core02.yml
 hst_svi_id: 2
 hst_vrrp_priority: 50

3. Update the pb_build_network.yml playbook with the following tasks to create and enable the L3 SVI interfaces:

- name: "PLAY 2: Configure Core Switches"
  hosts: core
  tags: l3_core
  tasks:
<-- Output Trimmed for brevity ------>
    - name: "Create L3 VLAN Interfaces"
      ios_l3_interface:
        name: "{{item.name }}"
        ipv4: "{{item.ipv4 | ipv4(hst_svi_id)}}"
      loop: "{{svi_interfaces}}"
      tags: l3_svi
    - name: "Enable the VLAN Interfaces"
      ios_interface:
        name: "{{ item.name }}"
        state: up
      loop: "{{ svi_interfaces }}"

4. Update the playbook with the following task to set up VRRP configuration on the SVI interfaces:

    - name: "Create VRRP Configs"
      ios_config:
        parents: interface {{ item.name }}
        lines:
          - vrrp {{item.name.split('Vlan')[1]}} priority {{ hst_vrrp_priority }}
          - vrrp {{item.name.split('Vlan')[1]}} ip {{item.ipv4 | ipv4(254)|ipaddr('address')}}
      loop: "{{svi_interfaces | selectattr('vrrp','equalto',true) | list }}"