[OCI] set zone in the ProvisionRecord

[HysunHe]

The run_instance returned a ProvisionRecord with zone set to None.

This PR is to fix this issue: set the right zone to the ProvisionRecord .

Tested (run the relevant ones):

• [x] Code formatting: bash format.sh
• [ ] Any manual or new tests for this PR (please specify below)
• [x] All smoke tests: pytest tests/test_smoke.py
• [ ] Relevant individual smoke tests: pytest tests/test_smoke.py::test_fill_in_the_name
• [ ] Backward compatibility tests: conda deactivate; bash -i tests/backward_compatibility_tests.sh