Add platform support for AWE5510/5310

[dgonzalez85]

Enhancement summary

When trying to deploy configurations with AVD in these platforms:

1. BGP update wait install command is not supported on this platform.
2. Management interface is named "Management1/1"

We should add natively support for these platforms and adjust their defaults. Likely this will be the same on 7200R new series, but im unable to test.

Which component of AVD is impacted

eos_designs

Use case example

Using AVD to deploy SDWAN on these switches.

Describe the solution you would like

Update platform settings to support these devices:
https://github.com/aristanetworks/avd/blob/devel/ansible_collections/arista/avd/roles/eos_designs/schemas/schema_fragments/platform_settings.schema.yml

Describe alternatives you have considered

I am currently using the following workaround:

platform_settings:
# Custom platform settings
- platforms:
  - AWE
  default_interface_mtu: 1500
  management_interface: Management1/1 <--
  feature_support:
    bgp_update_wait_install: false <--

Additional context

No response

Contributing Guide

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[ayushmittal-arista]

Also add renamed names for the platforms

5510 -> 7250R ('R' is very important)
5310 -> 7230R
5210 -> 7220R