[FS#187] prosody 0.9.1 ssl not working with luasec 0.6

[LEDE Bugs]

A new Flyspray task has been opened.  Details are below. 

User who did this - Pedro Palmeiro (mgondium) 

Attached to Project - LEDE Project
Summary - prosody 0.9.1 ssl not working with luasec 0.6
Task Type - Bug Report
Category - Packages
Status - Unconfirmed
Assigned To - 
Operating System - All
Severity - Low
Priority - Very Low
Reported Version - Trunk
Due in Version - Undecided
Due Date - Undecided
Details - "Unable to initialize TLS: LuaSec (required for encryption) was not found"

Prosody 0.9.10 requires luasec for SSL, but it looks like luasec 0.6 does not support Lua 5.1:
[[https://github.com/voidlinux/void-packages/issues/3778|https://github.com/voidlinux/void-packages/issues/3778]]

>From LEDE head on ath9k:

@prosodyctl about
Prosody 0.9.10
# Lua environment
Lua version:             	Lua 5.1
# Lua module versions
lfs:     	LuaFileSystem 1.6.2
lxp:     	LuaExpat 1.3.0
pposix:  	0.3.6
socket:  	LuaSocket 3.0-rc1
ssl:     	0.6

So it needs a downgraded luasec (which I do not know what regressions will imply).
Or maybe an upgraded Lua (which I don't know if it supports).

More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=187