[Security] [DX] Automatically add PasswordUpgradeBadge + default suppor…

[fabpot]

Q	A
Feature PR	symfony/symfony#39213
PR author(s)	@wouterj
Merged in	5.2

[javiereguiluz]

Closing in favor of #15908, a meta-issue that groups all pending security-related issues so we can easily check them.