IntentInstaller did't update flow rule

Some FlowRuleIntents will not be reinstalled when flows are equal between old FlowRuleIntent and new FlowRuleIntent.

However, we didn't care the traffic treatment when we compare flow rule. So flow rules will not be updated if we change traffic treatment only.

Simply test by using follow commands:

app activate org.onosproject.null
cfg set org.onosproject.provider.nil.NullProviders deviceCount 5
cfg set org.onosproject.provider.nil.NullProviders topoShape linear
cfg set org.onosproject.provider.nil.NullProviders enabled true
add-single-to-multi-intent --key sptmp --ethDst 00:00:00:00:00:01 null:0000000000000001/1 null:0000000000000005/1 null:0000000000000005/2
add-single-to-multi-intent --key sptmp --ethDst 00:00:00:00:00:01 null:0000000000000001/1 null:0000000000000005/1 null:0000000000000005/2 null:0000000000000005/3