_Functional Testing issues_

Branch: dpdk-next-net

1f24e0b41cc0fe7a6660a638e81ef9872ca14ca6 --> functional testing fail

Test environment and result as below:

Ubuntu 20.04
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 20.04
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: 0/2


To view detailed results, visit:
https://lab.dpdk.org/results/dashboard/tarballs/15847/

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