_Functional Testing issues_

Branch: dpdk-next-net

3a21d59b28c6de3c44fe4a350fbd3589a4349142 --> functional testing fail

Test environment and result as below:

Ubuntu 18.04
Kernel: 4.15.0-generic
Compiler: gcc 7.4
NIC: Intel Corporation Ethernet Converged Network Adapter XL710-QDA2 40000 Mbps
Target: x86_64-native-linuxapp-gcc
Fail/Total: 2/4
	Failed Tests:
		- mtu_update
		- stats_checks


Ubuntu 18.04
Kernel: 4.15.0-generic
Compiler: gcc 7.4
NIC: Intel Corporation Ethernet Converged Network Adapter 82599ES 10000 Mbps
Target: x86_64-native-linuxapp-gcc
Fail/Total: 0/5


To view detailed results, visit:
https://lab.dpdk.org/results/dashboard/tarballs/15575/

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