The recent edk2 builds have -DNETWORK_HTTP_BOOT_ENABLE=TRUE -DNETWORK_TLS_ENABLE Recent as in 2020.05-2 which means >=groovy.
For the eventual SRU to Focal things are more complex as there -DNETWORK_TLS_ENABLE was missing.
The recent edk2 builds have -DNETWORK_ HTTP_BOOT_ ENABLE= TRUE -DNETWORK_ TLS_ENABLE
Recent as in 2020.05-2 which means >=groovy.
For the eventual SRU to Focal things are more complex as there -DNETWORK_ TLS_ENABLE was missing.