Only set port-range-min in icmp security rule

A change was merged recently Iebf109f246d47cffc26ab3c2cf113234a4b2cffe
That causes the icmp types being set in security rules to start taking
effect, before this they were ignored, we want to allow type 8 (ping)
adding it twice as in a range doesn't work.

Change-Id: Ie7bc9721ca41ee9d73343f07f24f0aa752911944
Closes-Bug: #1299022
Merge "Only set port-range-min in icmp security rule"