IPACM: fix dynamic firewall rule issue

Previously SoftAP updates the mobileap_firewall.xml
but recently they will first copy to some temp file
and then copy back, in this case, IPACM failed to
detect file modify event. The fix is to also register
IN_MOVE event

Change-Id: Id5446eea132f0534da6bccb8858dd72b74bba09f
diff --git a/ipacm/src/IPACM_Main.cpp b/ipacm/src/IPACM_Main.cpp
index 6fb037a..595a8c1 100644
--- a/ipacm/src/IPACM_Main.cpp
+++ b/ipacm/src/IPACM_Main.cpp
@@ -145,7 +145,7 @@
 	char buffer[INOTIFY_BUF_LEN];
 	int inotify_fd;
 	ipacm_cmd_q_data evt_data;
-	uint32_t mask = IN_MODIFY;
+	uint32_t mask = IN_MODIFY | IN_MOVE;
 
 	inotify_fd = inotify_init();
 	if (inotify_fd < 0)
@@ -172,7 +172,7 @@
 
 		if (event->len > 0)
 		{
-			if (event->mask & IN_MODIFY)
+			if ( (event->mask & IN_MODIFY) || (event->mask & IN_MOVE))
 			{
 				if (event->mask & IN_ISDIR)
 				{