Plugin configuration via Nexus UI

[kevstigneev]

Expected results:

• Plugin is configured via Nexus UI using "capabilities" facility.
• Plugin configuration (List of replication peers with credentials #2) is persisted between Nexus restarts.
• Configuration on disk format is consistent with the other Nexus plugins.

Items to configure:

• List or replication peers. For each peer - URL and credentials.
• "me" - an URL that is sent to replication peers to identify this instance. That URL is matched against proxied repository URL on a peer.
• Thread pool size to send notification.
• Thread pool size for asynchronous downloads (if necessary).

[alekseysemenov]

Plugin UI capabilities example https://github.com/sannies/nexus-apt-plugin

[gd-tmagrys]

This issue may be split into 2:

1. UI part:

• input forms with items to configure, persisting this changes

2. backend part

• applying changes "on-the-fly" without restarting Nexus.