Check I2P maintainers' plans to get it into Debian proper

As decided at the 2016 Tails summit, once there is a long-term maintainer for I2P packages, we should discuss their plans to get them into Debian proper within a year, taking into account the Debian stable updates rules & process.

Related issues

Blocked by #11276 (closed)

Original created by @intrigeri on 12102 (Redmine)

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