Requirements:

ncclient (>=v0.5.2)
jxmlease (for display=json)
xmltodict
sudo apt install ansible
ansible-galaxy collection install ansible.netcommon
ssh-keygen -m PEM -t rsa -b 4096

Command to execute

ansible-playbook uCPEprovisioning.yml -vvv

Configuration of uCPE before activation of uCPEprovisioning.yml

Configuration of uCPE after activation of uCPEprovisioning.yml

Data in the uCPEprovisioning.yml:

- hosts: dosios2102
  remote_user: dosios2102
  tasks:
  - name: set serviceChain vRouter+vFirewall
    vars:
      ansible_command_timeout: 360
    ansible.netcommon.netconf_config:
      content: |
        <config xmlns="urn:ietf:params:xml:ns:netconf:base:1.0">
            <ecp xmlns="urn:dosi.shytyi.net:mgmt:ecp:1">
             # Section to configure OVS bridges 
             <switches>
                <switch>swLan</switch>
                <ports>
                  <port>0</port>
                  <cvlans>None</cvlans>
                  <n-rxq>4</n-rxq>
                  <n-txq>4</n-txq>
                  <port-mode>default</port-mode>
                  <stacked-mode>802.1q</stacked-mode>
                  <tag>None</tag>
                  <vm>vFirewall</vm>
                  <vm-port>2</vm-port>
                </ports>
                <ports>
                  <port>1</port>
                  <cvlans>None</cvlans>
                  <interface>vfp1</interface>
                  <n-rxq>4</n-rxq>
                  <n-txq>4</n-txq>
                  <port-mode>default</port-mode>
                  <stacked-mode>802.1q</stacked-mode>
                  <tag>None</tag>
                </ports>
              </switches>
              <switches>
                <switch>swWan</switch>
                <ports>
                  <port>1</port>
                  <cvlans>None</cvlans>
                  <interface>vfp2</interface>
                  <n-rxq>4</n-rxq>
                  <n-txq>4</n-txq>
                  <port-mode>default</port-mode>
                  <stacked-mode>802.1q</stacked-mode>
                  <tag>None</tag>
                </ports>
                <ports>
                  <port>2</port>
                  <cvlans>None</cvlans>
                  <n-rxq>4</n-rxq>
                  <n-txq>4</n-txq>
                  <port-mode>default</port-mode>
                  <stacked-mode>802.1q</stacked-mode>
                  <tag>None</tag>
                  <vm>vRouter</vm>
                  <vm-port>1</vm-port>
                </ports>
              </switches>
              <switches>
                <switch>swService</switch>
                <ports>
                  <port>1</port>
                  <cvlans>None</cvlans>
                  <n-rxq>4</n-rxq>
                  <n-txq>4</n-txq>
                  <port-mode>default</port-mode>
                  <stacked-mode>802.1q</stacked-mode>
                  <tag>None</tag>
                  <vm>vRouter</vm>
                  <vm-port>2</vm-port>
                </ports>
                <ports>
                  <port>2</port>
                  <cvlans>None</cvlans>
                  <n-rxq>4</n-rxq>
                  <n-txq>4</n-txq>
                  <port-mode>default</port-mode>
                  <stacked-mode>802.1q</stacked-mode>
                  <tag>None</tag>
                  <vm>vFirewall</vm>
                  <vm-port>1</vm-port>
                </ports>
              </switches>
              # Secrion to configure Service Functions
              <vms>
                <vm>vFirewall</vm>
                <boot-from>cdrom</boot-from>
                <cpu>4</cpu>
                <devices>
                  <device>0</device>
                  <drive>
                    <bus-type>virtio</bus-type>
                    <drive-type>cdrom</drive-type>
                    <file>http://192.168.5.1/vRouter.iso</file>
                  </drive>
                </devices>
                <if-nmbr>4</if-nmbr>
                <queues-nmbr>8</queues-nmbr>
                <queues-size>256</queues-size>
                <ram>4</ram>
              </vms>
              <vms>
                <vm>vRouter</vm>
                <boot-from>cdrom</boot-from>
                <cpu>4</cpu>
                <devices>
                  <device>0</device>
                  <drive>
                    <bus-type>virtio</bus-type>
                    <drive-type>cdrom</drive-type>
                    <file>http://192.168.5.1/vRouter.iso</file>
                  </drive>
                </devices>
                <if-nmbr>4</if-nmbr>
                <queues-nmbr>8</queues-nmbr>
                <queues-size>256</queues-size>
                <ram>4</ram>
              </vms>
            </ecp>
        </config>