Refactor the Insights controller spec.
Refactor the Insights controller spec.

[#38981217] Remove TODO in the spec by changing hard coded values in the
matchers to queries.

prakash-alpine/chorus,jamesblunt/chorus,atul-alpine/chorus,jamesblunt/chorus,lukepolo/chorus,mpushpav/chorus,jamesblunt/chorus,atul-alpine/chorus,hewtest/chorus,hewtest/chorus,atul-alpine/chorus,hewtest/chorus,hewtest/chorus,atul-alpine/chorus,mpushpav/chorus,lukepolo/chorus,hewtest/chorus,prakash-alpine/chorus,atul-alpine/chorus,mpushpav/chorus,jamesblunt/chorus,jamesblunt/chorus,lukepolo/chorus,hewtest/chorus,prakash-alpine/chorus,lukepolo/chorus,mpushpav/chorus,hewtest/chorus,hewtest/chorus,atul-alpine/chorus,mpushpav/chorus,jamesblunt/chorus,mpushpav/chorus,jamesblunt/chorus,prakash-alpine/chorus,atul-alpine/chorus,prakash-alpine/chorus,lukepolo/chorus,mpushpav/chorus,lukepolo/chorus,lukepolo/chorus