Update pip requirements
Change-Id: I988338fc5544e66026c8d0cdb02785c7b2fcb7d8
Signed-off-by: 
Gulsum Atici <gulsum.atici@canonical.com>
Change-Id: I988338fc5544e66026c8d0cdb02785c7b2fcb7d8
Signed-off-by: Gulsum Atici <gulsum.atici@canonical.com>