maven: Block repositories using http by default

A flaw was found in maven. Repositories that are defined in a dependency’s Project Object Model pom, which may be unknown to users, are used by default resulting in potential risk if a malicious actor takes over that repository or is able to insert themselves into a position to pretend to be that...

UBUNTU-CVE-2021-26291

Apache Maven will follow repositories that are defined in a dependency’s Project Object Model pom which may be surprising to some users, resulting in potential risk if a malicious actor takes over that repository or is able to insert themselves into a position to pretend to be that repository...