Clone QCBOR to share folder

QCBOR is an external dependency repo of psa-arch-tests.
It will be clone from github by default in every build config.
To avoid random clone errors caused by limitation on git bandwidth,
clone QCBOR to the share folder and update the default path of QCBOR.

Signed-off-by: Xinyu Zhang <xinyu.zhang@arm.com>
Change-Id: I26f4b996824a53c6218e4db7d8ea2625b97398c9
2 files changed