Revert "minin: fix port number configuration"

This reverts commit 5c8f9018a6004b222255776384e5aacb24485180.

Revert "munin: support not only GQTP but also HTTP"

This reverts commit 8df51f8f3941628609f4b0dfc7abcb1e528844e2.

It should be unified duplicated code for maintainability.
I'll fix this issue again.