Fix broken docker build due to pip-19.0

pip-19.0 fails to build with the option --no-cache-dir

Change-Id: I6494c6c6b4dc49d4fbd2ce657ed9824c5b3847e3
Issue-ID: OOM-1607
Signed-off-by: Petr Ospalý <p.ospaly@partner.samsung.com>
1 file changed