[job] Change travis notification timeout to 6 minutes.
[job] Change travis notification timeout to 6 minutes.

With a retry count of 10 this means a total job will not
take longer than 60 minutes.

k0nserv/trunk.cocoapods.org,k0nserv/trunk.cocoapods.org,CocoaPods/trunk.cocoapods.org,k0nserv/trunk.cocoapods.org,billinghamj/trunk.cocoapods.org,billinghamj/trunk.cocoapods.org,Shawn-WangDapeng/trunk.cocoapods.org,CocoaPods/trunk.cocoapods.org,Shawn-WangDapeng/trunk.cocoapods.org