[VOL-1588] Improve Flow Add performance

This update consists of the following:
1) Update the performance when adding a flow to a logical device,
decomposing the flow into parent and child device and sending the
flow to the adapters.
2) Format a number of files as per GO fmt.
3) Ensure the device graph cache gets updated when a new port is
added to the graph that belongs to an existing device in cache.

The flow update/deletion performance will be addressed in a separate
commit.

Change-Id: I2eb663cc73eef9fc6172203ed88a35726f5fe008
diff --git a/db/kvstore/consulclient.go b/db/kvstore/consulclient.go
index 738ca92..2d02342 100644
--- a/db/kvstore/consulclient.go
+++ b/db/kvstore/consulclient.go
@@ -498,11 +498,10 @@
 	}
 }
 
-
-func (c *ConsulClient)  AcquireLock(lockName string, timeout int) error {
+func (c *ConsulClient) AcquireLock(lockName string, timeout int) error {
 	return nil
 }
 
-func (c *ConsulClient)  ReleaseLock(lockName string) error {
+func (c *ConsulClient) ReleaseLock(lockName string) error {
 	return nil
-}
\ No newline at end of file
+}