[TESTSUITE] change build-node for python-testing-utils

pbr issue a priori linked to filelock lib and python version
Update build node

Issue-ID: CIMAN-412

Signed-off-by: morganrol <morgan.richomme@orange.com>
Change-Id: I209f67db1c6d2547b4c878cbf90a19707d9051d3
1 file changed