datatop: add support to capture ip table stats

With the new -r option, datatop will now capture
IP table stats every 5sec on a separate thread
without affecting the normal datatop polling.

CRs-fixed: 979414
Change-Id: Ia90b565f370a0c4983381e7c2ab84315d53728db
diff --git a/datatop/src/Makefile.am b/datatop/src/Makefile.am
index 5dd0469..8ac8014 100644
--- a/datatop/src/Makefile.am
+++ b/datatop/src/Makefile.am
@@ -20,3 +20,4 @@
 datatop_SOURCES += datatop_opt.c
 datatop_SOURCES += datatop_gen_poll.c
 datatop_SOURCES += datatop_sys_snap.c
+datatop_SOURCES += datatop_ip_table_poll.c