Rename to L3CoreService, and add Copernicus, LHCOne, and GWS as new L3 core services

Split BFD settings off into separate product block and allow for both v4 and v6 settings in a service binding port

# Conflicts:
#	tox.ini

 Conflicts:
	gso/annotations/__init__.py
	gso/annotations/base_site.py
	gso/annotations/coordinates.py
	gso/annotations/country_code.py
	gso/annotations/interfaces.py
	gso/annotations/ip_address.py
	gso/annotations/netbox_router.py
	gso/annotations/site_name.py
	gso/annotations/snmp.py
	gso/annotations/tt_number.py
	gso/annotations/unique_field.py
	gso/cli/imports.py
	gso/products/product_blocks/iptrunk.py
	gso/products/product_blocks/lan_switch_interconnect.py
	gso/products/product_blocks/site.py
	gso/services/librenms_client.py
	gso/types/__init__.py
	gso/types/base_site.py
	gso/types/coordinates.py
	gso/types/country_code.py
	gso/types/interfaces.py
	gso/types/netbox_router.py
	gso/types/site_name.py
	gso/types/snmp.py
	gso/types/tt_number.py
	gso/types/unique_field.py
	gso/utils/helpers.py
	gso/utils/types/__init__.py
	gso/utils/types/base_site.py
	gso/utils/types/coordinates.py
	gso/utils/types/country_code.py
	gso/utils/types/interfaces.py
	gso/utils/types/netbox_router.py
	gso/utils/types/site_name.py
	gso/utils/types/snmp.py
	gso/utils/types/tt_number.py
	gso/utils/types/unique_field.py
	gso/workflows/iptrunk/deploy_twamp.py
	gso/workflows/iptrunk/modify_isis_metric.py
	gso/workflows/router/redeploy_base_config.py
	gso/workflows/site/create_imported_site.py
	gso/workflows/site/create_site.py
	gso/workflows/site/modify_site.py
	test/conftest.py
	test/schemas/test_types.py
	test/services/test_librenms_client.py
	test/workflows/iptrunk/test_create_imported_iptrunk.py

* Allow for iptrunk validation workflow to be run on those that are still provisioning
* Update test fixture for router to deduplicate code

refactor site validation