Run gofmt on the codebase. (#722)

* Run `gofmt` on the codebase.

* Fix lists

* Add DiffOpt for shadow-paths (#723)

Co-authored-by: wenovus <wenbli@google.com>
Co-authored-by: Wen Bo Li <50884368+wenovus@users.noreply.github.com>

demo/optical/opticaldemo.go

@@ -58,9 +58,9 @@ type apsModuleInput struct {
 func CreateDemoOpticalInstance() (*oc.Device, error) {
 	d := &oc.Device{
 		Aps: &oc.Aps{},
-		Component:        map[string]*oc.Component{
-			"mod-one": &oc.Component{Name: ygot.String("mod-one")},
-			"mod-two": &oc.Component{Name: ygot.String("mod-two")},
+		Component: map[string]*oc.Component{
+			"mod-one": {Name: ygot.String("mod-one")},
+			"mod-two": {Name: ygot.String("mod-two")},
 		},
 	}
 

exampleoc/oc.go

@@ -11,26 +11,27 @@ OpenConfig models using the ygot package.
 
 This package was generated by github.com/openconfig/ygot
 using the following YANG input files:
-	- public/release/models/network-instance/openconfig-network-instance.yang
-	- public/release/models/optical-transport/openconfig-optical-amplifier.yang
-	- public/release/models/optical-transport/openconfig-terminal-device.yang
-	- public/release/models/optical-transport/openconfig-transport-line-protection.yang
-	- public/release/models/platform/openconfig-platform.yang
-	- public/release/models/policy/openconfig-routing-policy.yang
-	- public/release/models/lacp/openconfig-lacp.yang
-	- public/release/models/system/openconfig-system.yang
-	- public/release/models/stp/openconfig-spanning-tree.yang
-	- public/release/models/interfaces/openconfig-interfaces.yang
-	- public/release/models/interfaces/openconfig-if-ip.yang
-	- public/release/models/interfaces/openconfig-if-aggregate.yang
-	- public/release/models/interfaces/openconfig-if-ethernet.yang
-	- public/release/models/interfaces/openconfig-if-ip-ext.yang
-	- public/release/models/relay-agent/openconfig-relay-agent.yang
-	- public/release/models/aft/openconfig-aft-network-instance.yang
-	- public/release/models/lldp/openconfig-lldp.yang
+  - public/release/models/network-instance/openconfig-network-instance.yang
+  - public/release/models/optical-transport/openconfig-optical-amplifier.yang
+  - public/release/models/optical-transport/openconfig-terminal-device.yang
+  - public/release/models/optical-transport/openconfig-transport-line-protection.yang
+  - public/release/models/platform/openconfig-platform.yang
+  - public/release/models/policy/openconfig-routing-policy.yang
+  - public/release/models/lacp/openconfig-lacp.yang
+  - public/release/models/system/openconfig-system.yang
+  - public/release/models/stp/openconfig-spanning-tree.yang
+  - public/release/models/interfaces/openconfig-interfaces.yang
+  - public/release/models/interfaces/openconfig-if-ip.yang
+  - public/release/models/interfaces/openconfig-if-aggregate.yang
+  - public/release/models/interfaces/openconfig-if-ethernet.yang
+  - public/release/models/interfaces/openconfig-if-ip-ext.yang
+  - public/release/models/relay-agent/openconfig-relay-agent.yang
+  - public/release/models/aft/openconfig-aft-network-instance.yang
+  - public/release/models/lldp/openconfig-lldp.yang
+
 Imported modules were sourced from:
-	- public/...
-	- deps/...
+  - public/...
+  - deps/...
 */
 package exampleoc