[TIMOB-14937] Do not add as childView controller on IOS7

Fixes [TIMOB-14937](https://jira.appcelerator.org/browse/TIMOB-14937)
Alloy and non alloy test case are in the ticket

Regress against [TIMOB-11386](https://jira.appcelerator.org/browse/TIMOB-11386)