This module lets you create a VMware port group on the hosts in a given cluster:

- name: Create a portgroup with vlan
  vmware_portgroup:
    hostname: "{{ vsphere_host }}"
    username: "{{ vsphere_username }}"
    password: "{{ vsphere_password }}"
    validate_certs: "no"
    cluster_name: "my_cluster"
    switch_name: "my_switch"
    portgroup_name: "my_portgroup_vlan123"
    vlan_id: "123"
  delegate_to: "localhost"