Implement ip-helper for dhcp-relay

[titom73]

Change Summary

Apply data model from eos_cli_config_gen in eos_l3ls_evpn

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Code style update (formatting, renaming)
• Refactoring (no functional changes)
• Documentation content changes
• Other (please describe):

Related Issue(s)

Fixes #312

Component(s) name

eos_l3ls_evpn

Proposed changes

Apply data model from eos_cli_config_gen in eos_l3ls_evpn

tenants:
  # Tenant A Specific Information - VRFs / VLANs
  Tenant_A:
    mac_vrf_vni_base: 10000
    vrfs:
      TENANT_A_PROJECT01:
        vrf_vni: 11
        svis:
          311:
            name: 'PR01-TRUST-DHCP'
            tags: [POD01]
            enabled: true
            ip_address_virtual: 10.1.31.254/24
            ip_helpers:
              1.1.1.1:
                source_interface: lo100
  Tenant_B:
    mac_vrf_vni_base: 11000
    vrfs:
      ip_helpers:
        1.1.1.1:
          source_interface: lo100
      TENANT_B_PROJECT01:
        vrf_vni: 12
        svis:
          311:
            name: 'PR01-TRUST-DHCP'
            tags: [POD01]
            enabled: true
            ip_address_virtual: 10.2.31.254/24

How to test

Rendering is as below for eos_cli_config_gen:

  Vlan311:
    tenant: Tenant_A
    tags: ['POD01']
    description: PR01-TRUST-DHCP
    vrf: TENANT_A_PROJECT01
    ip_address_virtual: 10.1.31.254/24
    ip_helpers:
      1.1.1.1:
        source_interface: lo100
        vrf: TENANT_A_PROJECT01

And EOS configuration:

interface Vlan311
   description PR01-TRUST-DHCP
   vrf TENANT_A_PROJECT01
   ip address virtual 10.1.31.254/24
   ip helper-address 1.1.1.1 vrf TENANT_A_PROJECT01  source-interface lo100

Checklist:

• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have updated molecule CI testing accordingly
• I have read the CONTRIBUTING document.
• All new and existing tests passed (pre-commit, make linting and make sanity-lint).

[carlbuchmann]

@titom73 - one of the ideas I had regarding the eos_lsls_evpn data model for SVIs, is to implement hierarchical profiles configuration as the configuration might be repetitive across many interfaces.

[titom73]

• Add support for source_vrf outside of SVI vrf.

[titom73]

Ready for testing and review

[carlbuchmann]

LGTM