Correcting the testing package in Operator API Tests

[cniackz]

We need to properly test operatorapi instead of restapi:

I found this issue while adding a new test and looking at the coverage output in the html file.
We were touching restapi but we should be touching operatorapi instead; so I will correct that even if the coverage get decreased because we need to include all go packages not only restapi package.

Coverage

-          threshold=54.00
+          threshold=35.20

This is because 54.00 comes from restapi only, while 35.20 is the union of restapi & operatorapi