added --force|-f option to force script to run

opnsense-carp-dhcp-master.php

@@ -38,6 +38,13 @@ $syncIP = $config['hasync']['synchronizetoip'];
 # Start of Script #
 ###################
 
+$force = false;
+if (count($argv) > 1){
+    if ($argv[1] == "--force" or $argv[1] == "-f"){
+        $force = true;
+    }
+}
+
 
 function write_config_and_restart_services ($interface) {
     write_config();
@@ -55,7 +62,11 @@ printf("Trying to ping sync host, %s. \n", $syncIP);
 exec("ping -c 4 " . $syncIP, $output, $result);
 if ($result == 0) {
     printf("Ping is successful. No need to update. \n");
-    return;
+    if ($force) {
+        printf("Force was passed in, so continuing with script. \n");
+    } else {
+        return;
+    }    
 }