FS-4757 this should fix it but I am not happy with the way this is done but since polycom is one of the only phones that does this right I have no other choice

* Rename option ringback-during-collect to immediate-ringback
* Allow regular ringback tone with immediate-ringback, not just a wav file
* Do not request full frame of data, just packet_len which is what we receive per IO interval
* Ignore user data when playing ringback tone

This reverts commit 77d0ee21.

This was introduced by commit a4408e62.

FS-5612 --resolve

mod_rayo: move alias definition to config file, tweak console command completion to make testing easier