Changes to use BESS dpdk-2011 branch

Dockerfile

@@ -9,13 +9,18 @@ ARG CPU=native
 RUN apt-get update && \
     apt-get -y install --no-install-recommends \
         ca-certificates \
-        libelf-dev
-
+        libelf-dev \
+        python3-pip \
+        python3-setuptools
+RUN pip3 install --no-cache-dir \
+        meson \
+        ninja
+
 ARG MAKEFLAGS
 
 # linux ver should match target machine's kernel
 WORKDIR /libbpf
-ARG LIBBPF_VER=v0.1.0
+ARG LIBBPF_VER=v0.3
 RUN curl -L https://github.com/libbpf/libbpf/tarball/${LIBBPF_VER} | \
     tar xz -C . --strip-components=1 && \
     cp include/uapi/linux/if_xdp.h /usr/include/linux && \
@@ -25,7 +30,7 @@ RUN curl -L https://github.com/libbpf/libbpf/tarball/${LIBBPF_VER} | \
 
 # BESS pre-reqs
 WORKDIR /bess
-ARG BESS_COMMIT=master
+ARG BESS_COMMIT=dpdk-2011
 RUN curl -L https://github.com/NetSys/bess/tarball/${BESS_COMMIT} | \
     tar xz -C . --strip-components=1
 

patches/bess/0003-Add-FIB-routing-support-in-IPLookup-module.patch

@@ -5,24 +5,10 @@ Subject: [PATCH] Add FIB routing support in IPLookup module.
 
 Signed-off-by: Muhammad Asim Jamshed <muhammad.jamshed@intel.com>
 ---
- build.py                  |  2 +-
  core/modules/ip_lookup.cc | 61 +++++++++++++++++++++++++++++++++++++--
  core/modules/ip_lookup.h  | 14 +++++++++
  3 files changed, 74 insertions(+), 3 deletions(-)
 
-diff --git a/build.py b/build.py
-index 3fac9064..d0f16cc7 100755
---- a/build.py
-+++ b/build.py
-@@ -95,5 +95,5 @@ DPDK_TARGET = 'x86_64-native-linuxapp-gcc'
- kernel_release = cmd('uname -r', quiet=True).strip()
-
- DPDK_DIR = '%s/%s' % (DEPS_DIR, DPDK_VER)
--DPDK_CFLAGS = '"-g -w"'
-+DPDK_CFLAGS = '"-g -w -DALLOW_EXPERIMENTAL_API"'
- DPDK_CONFIG = '%s/build/.config' % DPDK_DIR
-
- extra_libs = set()
 diff --git a/core/modules/ip_lookup.cc b/core/modules/ip_lookup.cc
 index 3c8b1157..7e976d41 100644
 --- a/core/modules/ip_lookup.cc