Improve GoReportCard metrics, both gofmt and golint (#90)

* Format main,fake,network go source to improve GoReportCard

Order of import changed in main.go and network.go,
missing ending newline added in fake.go

* Fixed simple golint suggestions in multiple files

Mostly about missing or incomplete comments

source/cpuid/cpuid.go

@@ -21,6 +21,7 @@ import "github.com/klauspost/cpuid"
 // Source implements FeatureSource.
 type Source struct{}
 
+// Name returns an identifier string for this feature source.
 func (s Source) Name() string { return "cpuid" }
 
 // Discover returns feature names for all the supported CPU features.

source/fake/fake.go

@@ -19,8 +19,10 @@ package fake
 // Source implements FeatureSource.
 type Source struct{}
 
+// Name returns an identifier string for this feature source.
 func (s Source) Name() string { return "fake" }
 
+// Discover returns feature names for some fake features.
 func (s Source) Discover() ([]string, error) {
 	features := []string{}
 
@@ -28,4 +30,4 @@ func (s Source) Discover() ([]string, error) {
 	features = append(features, "fakefeature1", "fakefeature2", "fakefeature3")
 
 	return features, nil
-}
+}

source/network/network.go

@@ -19,19 +19,20 @@ package network
 import (
 	"bytes"
 	"fmt"
+	"github.com/golang/glog"
 	"io/ioutil"
 	"net"
 	"strconv"
 	"strings"
-	"github.com/golang/glog"
 )
 
 // Source implements FeatureSource.
 type Source struct{}
 
+// Name returns an identifier string for this feature source.
 func (s Source) Name() string { return "network" }
 
-// returns feature names sriov-configured and sriov if SR-IOV capable NICs are present and/or SR-IOV virtual functions are configured on the node
+// Discover returns feature names sriov-configured and sriov if SR-IOV capable NICs are present and/or SR-IOV virtual functions are configured on the node
 func (s Source) Discover() ([]string, error) {
 	features := []string{}
 	netInterfaces, err := net.Interfaces()

source/panic_fake/fake_panic.go

@@ -19,8 +19,10 @@ package panic_fake
 // Source implements FeatureSource.
 type Source struct{}
 
+// Name returns an identifier string for this feature source.
 func (s Source) Name() string { return "panic_fake" }
 
+// Discover calls panic().
 func (s Source) Discover() ([]string, error) {
 	panic("fake panic error")
 }

source/pstate/pstate.go

@@ -24,6 +24,7 @@ import (
 // Source implements FeatureSource.
 type Source struct{}
 
+// Name returns an identifier string for this feature source.
 func (s Source) Name() string { return "pstate" }
 
 // Discover returns feature names for p-state related features such as turbo boost.

source/rdt/rdt.go

@@ -31,9 +31,10 @@ const (
 // Source implements FeatureSource.
 type Source struct{}
 
+// Name returns an identifier string for this feature source.
 func (s Source) Name() string { return "rdt" }
 
-// Returns feature names for CMT and CAT if suppported.
+// Discover returns feature names for CMT and CAT if suppported.
 func (s Source) Discover() ([]string, error) {
 	features := []string{}