Add psutil to testing virtualenv
Add psutil to testing virtualenv

Change-Id: I650c9f226bcdc6328a7b4ff2dc4bd20cea8a512a
Signed-off-by: juraj.linkes <cc98fdfd74a97bdc42df592c19d962e48c451a95@pantheon.tech>

vpp-dev/vpp,FDio/vpp,FDio/vpp,FDio/vpp,vpp-dev/vpp,FDio/vpp,FDio/vpp,chrisy/vpp,vpp-dev/vpp,vpp-dev/vpp,chrisy/vpp,chrisy/vpp,vpp-dev/vpp,chrisy/vpp,FDio/vpp,FDio/vpp,vpp-dev/vpp,chrisy/vpp,chrisy/vpp,chrisy/vpp,vpp-dev/vpp,chrisy/vpp,FDio/vpp