fix logging

models/ldap.go

@@ -240,7 +240,7 @@ func VerifyLdapCreds(username string, password string) bool {
 		log.Printf("VerifyLdapCreds group search error : '%s'\n", err)
 		return false
 	}
-	fmt.Printf("groups: %v\n", groups)
+	log.Printf("groups: %v\n", groups)
 
 	return true
 }
@@ -271,7 +271,7 @@ func GetGroupsOfUser(username string, baseDN string, conn *ldap.Conn) ([]string,
 		nil,
 	)
 
-	fmt.Printf("searchRequest: %v\n", searchRequest)
+	log.Printf("searchRequest: %v\n", searchRequest)
 
 	sr, err := conn.Search(searchRequest)
 	if err != nil {