Description of problem:
when you attempt to create a copy of a custom alert the copy replaces the original

Version-Release number of selected component (if applicable):
cfme-5.5.2.4-1.el7cf.x86_64

How reproducible:
trivial

Steps to Reproduce:
1. create a custom alert
2. copy custom alert
3. rename copy
4. save copy

Actual results:
the copied alert replaces the original

Expected results:
there should be two alerts