test: disable test results caching with -count flag
test: disable test results caching with -count flag

According to the 'go test' help, "The idiomatic way to disable test
caching explicitly is to use -count=1." This removes GOCACHE=off in
favor of using -count=1 as GOCACHE=off breaks other tooling including
the use of go modules.

Signed-off-by: John Mulligan <eda8ad33169deab44f9fe65847f99e368da6c91b@redhat.com>

ceph/go-ceph,ceph/go-ceph,ceph/go-ceph