The default grep behavior will match any part of the string which
means that rules like 'foo' and 'foo-plus' will be matched if we are
only interested in 'foo'. As such, this is causing problems with QoS
rules which happen to have overlapping names. It's best to use
'grep -x' to only match the rule we are interested in.
Closes-Bug: #1741990
Change-Id: I26f7f4a933e1b96ba7a92efc79f1b87c806ccdc3
4a9a00fb3b