Update fluid python sdk to v1.0.3

Signed-off-by: trafalgarzzz <[email protected]>

Update fluid python sdk to v1.0.3

Signed-off-by: trafalgarzzz <[email protected]>

doc: Update README.md to instruct installation

Upgrade fluidsdk to v1.0.2

- SDK is auto-generated with Fluid repo commit `b96f0ddc`

Signed-off-by: trafalgarzzz <[email protected]>

Update examples

Support alpha version on PyPI

Signed-off-by: trafalgarzzz <[email protected]>