Add a final grep if exit code of reposync is 0. There are cases where
dnf reposync will say the sync succeeded despite not downloading a
package due to a failed mirror. It is a failure when a GPG key can't be
verified or some other unforeseen cirumstance... but not when a package
can't be downloaded because of "all mirrors tried"
Also added "time" to the fpsync commands for RL9 syncing.