_Functional Testing issues_

Branch: dpdk-next-net

9f9ef3a34277bee911aca475b91138109820a7d4 --> functional testing fail

Test environment and result as below:

Ubuntu 18.04 ARM
Kernel: 4.15.0-132-generic
Compiler: gcc 7.5
NIC: Arm Mellanox ConnectX-5 10000 Mbps
Target: x86_64-native-linuxapp-gcc
Fail/Total: 3/4
	Failed Tests:
		- mac_filter
		- mtu_update
		- stats_checks


To view detailed results, visit:
https://lab.dpdk.org/results/dashboard/tarballs/15700/

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