Merge branch 'feat/tid-openconfig-multivendor' into 'develop'

src/device/Dockerfile

src/device/requirements.in

src/device/service/Tools.py

src/device/service/drivers/openconfig/OpenConfigDriver.py

...rvice/drivers/openconfig/templates/ACL/ACL_multivendor.py

...ervice/drivers/openconfig/templates/ACL/openconfig_acl.py

src/device/service/drivers/openconfig/templates/EndPoints.py

...device/service/drivers/openconfig/templates/Interfaces.py

.../service/drivers/openconfig/templates/NetworkInstances.py

...ice/service/drivers/openconfig/templates/RoutingPolicy.py

src/device/service/drivers/openconfig/templates/Tools.py

...rivers/openconfig/templates/VPN/Interfaces_multivendor.py

.../openconfig/templates/VPN/Network_instance_multivendor.py

...ervice/drivers/openconfig/templates/VPN/Routing_policy.py

...drivers/openconfig/templates/VPN/openconfig_interfaces.py

...s/openconfig/templates/VPN/openconfig_network_instance.py

...ers/openconfig/templates/VPN/openconfig_routing_policy.py

src/device/service/drivers/openconfig/templates/__init__.py

src/service/service/service_handler_api/SettingsHandler.py

src/service/service/service_handler_api/Tools.py