libnetutils: Rename dhcptool to dhcpdbg

Also print warning that IP will not allow full connectivity.

Test: Manual

Change-Id: I264c478f07236108a01e766c5264897c2000f008
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
diff --git a/libnetutils/Android.bp b/libnetutils/Android.bp
index 68a74a0..0caf145 100644
--- a/libnetutils/Android.bp
+++ b/libnetutils/Android.bp
@@ -19,7 +19,7 @@
 }
 
 cc_binary {
-    name: "dhcptool",
+    name: "dhcpdbg",
 
     srcs: [
         "dhcptool.c",