Description of problem:

The != operation on labels and other list fields like containers returns 0 results. != must be equivalent to !, which is working as expected.

Version-Release number of selected component (if applicable):

How reproducible:

Steps to Reproduce:

1. Search for 

   label:!app=search

   Results are as expected.

2. Now replace Unable to render embedded object: File (* with *) not found.= 

   label:!=app=search

Actual results: 

Search returns 0 results.

Expected results:

Using Unable to render embedded object: File (= operation must be the same as using `) not found.`

Additional info: