Adding Configure lldp role support for Cisco-IOS devices

[justjais]

Added configure_lldp and configure_lldp jinja template for Cisco IOS device provider to configure lldp using ios device provider role.

To configure lldp via this role user needs to build their playbook as:

- hosts: ios

  roles:
  - name ansible-network.cisco_ios
    function: configure_lldp
  vars:
    lldp:
      - holdtime: 60
        reinit: 4
        timer: 60
        tlv-select: management-address
        interface: GigabitEthernet 0/3
        receive: enable
        transmit: disable

[softwarefactory-project-zuul]

Build succeeded.

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