Resolve Issue #443

[seconroy]

Description

Resolves issue #443. Convert toBody of sdwan_service_lan_vpn_interface_ethernet_feature and sdwan_transport_wan_vpn_interface_ethernet_feature to manual resources and adds check to see in Interface contains a .

Types of Changes

• New feature (non-breaking change which adds functionality)
• Bug fix (non-breaking change which fixes an issue)
• Breaking change (fix or feature that would cause existing functionality to change)
• Build/CI change
• Code quality improvement/refactoring/documentation (no functional changes)

Checklist

• My code follows the code style of this project
• I have added tests to cover my changes
• All new and existing tests pass locally