[rdkb][common][app][Add tcpdump build-in]

[Description]
Add tcpdump build-in for chihuahua tool or debug

[Release-log]

diff --git a/recipes-core/images/rdk-generic-broadband-image.bbappend b/recipes-core/images/rdk-generic-broadband-image.bbappend
index 5863454..b5035ed 100644
--- a/recipes-core/images/rdk-generic-broadband-image.bbappend
+++ b/recipes-core/images/rdk-generic-broadband-image.bbappend
@@ -33,7 +33,9 @@
     pptp-linux \
     rp-pppoe  \  
     xl2tpd \
-    strongswan \  
+    strongswan \
+    libpcap \
+    tcpdump \  
     "
 #IMAGE_INSTALL += " opensync openvswitch mesh-agent e2fsprogs "