we cannot depend on the master branch of external-snapshotter
in cephcsi as the master branch can change anytime. its
good to use released tags to our E2E.
fixes: #1416
Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
(cherry picked from commit d77b23e3c199e25b05437b618212001da251a560)