[BUGFIX 0184711](IOS)Increase connection Interval from 20ms to 22ms. 
[BUGFIX 0184711](IOS)Increase connection Interval from 20ms to 22ms. 

Increase timeout from 5s to 20s, in particular to allow md5 calculation 
on the drone.

Change-Id: I00a25e74eec24b16653efca5cd59eb3135319169
Reviewed-on: https://gerrit.parrot.biz/31004
Reviewed-by: Djavan Bertrand <7232792b712c7d1777e4e988572ac52f60124955@parrot.com>

Parrot-Developers/libARUtils,Parrot-Developers/libARUtils,Parrot-Developers/libARUtils