Add networks, subscribers, and watchers to github input (#6161)

plugins/inputs/github/github_test.go

@@ -98,12 +98,17 @@ func TestGetFields(t *testing.T) {
 	forks := 2
 	openIssues := 3
 	size := 4
+	subscribers := 5
+	watchers := 6
 
 	repository := gh.Repository{
-		StargazersCount: &stars,
-		ForksCount:      &forks,
-		OpenIssuesCount: &openIssues,
-		Size:            &size,
+		StargazersCount:  &stars,
+		ForksCount:       &forks,
+		OpenIssuesCount:  &openIssues,
+		Size:             &size,
+		NetworkCount:     &forks,
+		SubscribersCount: &subscribers,
+		WatchersCount:    &watchers,
 	}
 
 	getFieldsReturn := getFields(&repository)
@@ -112,8 +117,11 @@ func TestGetFields(t *testing.T) {
 
 	correctFieldReturn["stars"] = 1
 	correctFieldReturn["forks"] = 2
+	correctFieldReturn["networks"] = 2
 	correctFieldReturn["open_issues"] = 3
 	correctFieldReturn["size"] = 4
+	correctFieldReturn["subscribers"] = 5
+	correctFieldReturn["watchers"] = 6
 
 	require.Equal(t, true, reflect.DeepEqual(getFieldsReturn, correctFieldReturn))
 }