For UVEs with stats, Opserver sends stats query to the QueryEngine only when the non-stats field is present in the UVE and/or requested in cfilt.
Closes-Bug: #1354456

Change-Id: I83a974b1201b5b3c06cdbb49c9807a548ccb1e6e
(cherry picked from commit 84872e80834ee47a617e3ada2305f65adf07ae4e)
Merge "For UVEs with stats, Opserver sends stats query to the QueryEngine only when the non-stats field is present in the UVE and/or requested in cfilt. Closes-Bug: #1354456" into R1.10