Added network enabled check in multiple nic role rendering file

Without this check, even though network is disabled in
network_data file, network configuration is present in role file.

Change-Id: I03c361f3549f2d0bb9367f7fcd77349b3249fa70
Closes-Bug: 1761484

network/config/multiple-nics/role.role.j2.yaml

@@ -84,7 +84,7 @@ resources:
                     get_param: ControlPlaneDefaultRoute
 {%- endif %}
 {%- set nics_used = [1] %}
-{%- for network in networks if network.name not in role.networks_skip_config|default([]) %}
+{%- for network in networks if network.enabled|default(true) and network.name not in role.networks_skip_config|default([]) %}
 {%- if network.name not in ["External", "Tenant"] %}
 {%- if network.name in role.networks %}
               - type: interface