Update Extensions Build Config to Pull in relocated xDS code extensions

[ben-taussig-solo]

Description

• As described in the envoy 1.27.0 changelog, upstream has moved xDS code extensions. Because Gloo Edge relies on xDS, we need to explicitly include these extensions
• https://www.envoyproxy.io/docs/envoy/latest/version_history/v1.27/v1.27.0
• In practice, this means that envoy-gloo crashes when it is provided config which specifies the ads_config field. The bootstrap config provided by Gloo Edge always includes this field, so this change is necessary to make envoy-gloo v1.27 compatible with Gloo Edge

Testing

• I tested this by running Envoy with a simple config that specifies the ads_config field. On v1.27.1-patch2, this causes envoy to crash.
• I will run the envoy binary created by this PR's CI against the same config. I expect it to behave normally
• The specific config I used is:

  admin:
  access_log_path: /dev/stdout
  address:
  socket_address:
    address: 0.0.0.0
    port_value: 19000
  static_resources:
  listeners:
  - name: listener_0
  address:
    socket_address: { address: 0.0.0.0, port_value: 10000 }
  filter_chains:
  - filters:
    - name: envoy.filters.network.http_connection_manager
      typed_config:
        "@type": type.googleapis.com/envoy.extensions.filters.network.http_connection_manager.v3.HttpConnectionManager
        stat_prefix: http
        codec_type: AUTO
        route_config:
          name: local_route
          virtual_hosts:
          - name: local_service
            domains: ["*"]
            routes:
            - match:
                prefix: /echo
              route:
                cluster: postman-echo
                prefix_rewrite: /post
        http_filters:
        - name: envoy.filters.http.router
          typed_config:
            "@type": type.googleapis.com/envoy.extensions.filters.http.router.v3.Router
  clusters:
  - connect_timeout: 5.000s
  load_assignment:
    cluster_name: postman-echo
    endpoints:
    - lb_endpoints:
      - endpoint:
          address:
            socket_address:
              address: httpbin.org
              port_value: 443
  name: postman-echo
  type: LOGICAL_DNS
  transport_socket:
    name: envoy.transport_sockets.tls
    typed_config:
      "@type": type.googleapis.com/envoy.extensions.transport_sockets.tls.v3.UpstreamTlsContext
  dynamic_resources:
  ads_config:
  transport_api_version: V3
  api_type: GRPC
  rate_limit_settings: {}
  grpc_services:
  - envoy_grpc: {cluster_name: gloo.gloo-system.svc.cluster.local:9977}
  cds_config:
  resource_api_version: V3
  ads: {}
  lds_config:
  resource_api_version: V3
  ads: {}

[nfuden]

Any way we can add a programmatic check to warn or some such? Maybe that lines exist but may be commentedout?