`interface` URI parameter support in `net.box.connect`

[TarantoolBot]

Now a URI passed to the net.box.connect can contain the interface
param specifying the name of the interface to bind the connection to.
Example: net_box.connect({3301, params = {interface = 'lo'}}).
Requested by @mkostoevr in tarantool/tarantool@5528ca2.