We found a new github runner that doesn't have an extra
disk mounted on /mnt and it causes massive amounts
of CI failures. We can overcome this circumstance
by creating an iSCSI disk as an extra disk.
ref. https://github.com/rook/rook/issues/16978#issue-3862612835
Signed-off-by: Satoru Takeuchi <satoru.takeuchi@gmail.com>
(cherry picked from commit 0137274b58)