Add PcapPlusPlus library for packet parsing
Bump version to 2.1.0

Change-Id: Ic1d083ccff515f3b74a25dcf5b2f2ee39e1ad650
diff --git a/Makefile b/Makefile
index 2d2cd67..7404b8e 100644
--- a/Makefile
+++ b/Makefile
@@ -23,6 +23,7 @@
 CMOCK_VER         ?= 0207b30
 GMOCK_GLOBAL_VER  ?= 1.0.2
 GRPC_VER          ?= v1.31.1
+PCAPPLUSPLUS_VER  ?= v20.08
 
 # Docker related
 DOCKER_LABEL_VCS_DIRTY     = false
@@ -46,7 +47,8 @@
 	--build-arg GTEST_VER=${GTEST_VER} \
 	--build-arg CMOCK_VER=${CMOCK_VER} \
 	--build-arg GMOCK_GLOBAL_VER=${GMOCK_GLOBAL_VER} \
-	--build-arg GRPC_VER=${GRPC_VER}
+	--build-arg GRPC_VER=${GRPC_VER} \
+	--build-arg PCAPPLUSPLUS_VER=${PCAPPLUSPLUS_VER}
 
 .DEFAULT_GOAL := build