eliminate the usage of ContainerOp in testcases and
update the testcase accordingly, including filenames starting
with `o` to `u`
Signed-off-by: Yihong Wang <yh.wang@ibm.com>
* update example and tests to also include parallel use case
* update example and tests to also include parallel use case
* add back the sequential example
* update permission
* remove sub-folders
* update readme instructions
* rename files to make it consistent
* update tests to be consistent with kfp samples