* Refactor and move all v2 related code to under the v2 namespace.
Most of the changes are around imports and restructuring of the
codebase. While it looks like a lot of code was added, most of the code
already existed and was simply moved or copied over to v2. The only
exceptions are:
- under kfp/v2/components/component_factory.py: some helper functions
were copied with simplification from _python_op.py
- we no longer strip the `_path` suffix in v2 components.
Note: there is still some duplication of code (particularly between
component_factory.py and _python_op.py), but it's ok for now since we
intend to replace some of this with v2 ComponentSpec + BaseComponent.
* Update setup.py.
* update tests.
* revert accidental change of gcpc
* Fix component entrypoint.
* Update goldens.
* fix tests.
* fix merge conflict.
* revert gcpc change.
* fix tests.
* fix tests.
* Add type aliases for moved files.
* merge and update goldens.
* Enable the use of v2 Executor from KFP package.
This avoids the need to paste Executor code for v2 components into
the entrypoint of lightweight components.
* Update tests.
* quote package path.
* quote package path.
* escape fragment
* Update golden files.
* update goldens.
* Cleanup.
* More cleanup.
* update goldens.
* style updates.
* clean up sample tests.
* fix trailing comma
* Try using signed urls.
* fix
* fix presubmit
* try /bin/bash for Makefile shell
* undo signed url change.
Co-authored-by: Yuan (Bob) Gong <4957653+Bobgy@users.noreply.github.com>