Allow to set table as net_box_uri

[ImeevMA]

Currently, the net_box_uri argument only accepts a string. However, it is legal to use a table to set up a listen, if the table can be parsed using require('uri').parse(). Allowing table as net_box_uri makes it easier to use params, such as SSL params.

Fixing this issue will avoid converting the URI from table to string on the user side, and the URI can be passed directly to net_box_uri. In particular, this makes it easier to create a server using the config module after submitting a PR tarantool/tarantool#9385.