storcon: Add graceful draining to storcon_cli node-delete

[ephemeralsad]

Problem

Related issue: #11282

The storcon_cli node-delete command currently performs immediate deletion, which can cause client-facing outages due to the lack of a graceful shutdown process.

Summary of changes

storcon_cli

• Introduced a --force flag to node-delete for immediate deletion without draining (current functionality).
• By default (when --force is not set), the command now initiates a graceful drain of the node before deletion.
• Implemented status reporting to track the draining progress.

[github-actions]

8492 tests run: 7899 passed, 11 failed, 582 skipped (full report)

---

Failures on Postgres 17

• test_drain_with_secondary_locations: release-x86-64-without-lfc, release-x86-64-with-lfc, debug-x86-64-without-lfc, release-arm64-without-lfc, release-arm64-with-lfc

Failures on Postgres 16

• test_drain_with_secondary_locations: release-x86-64-with-lfc, release-arm64-with-lfc

Failures on Postgres 15

• test_drain_with_secondary_locations: release-x86-64-with-lfc, release-arm64-with-lfc

Failures on Postgres 14

• test_drain_with_secondary_locations: release-x86-64-with-lfc, release-arm64-with-lfc

# Run all failed tests locally:
scripts/pytest -vv -n $(nproc) -k "test_drain_with_secondary_locations[release-pg14] or test_drain_with_secondary_locations[release-pg14] or test_drain_with_secondary_locations[release-pg15] or test_drain_with_secondary_locations[release-pg15] or test_drain_with_secondary_locations[release-pg16] or test_drain_with_secondary_locations[release-pg16] or test_drain_with_secondary_locations[release-pg17] or test_drain_with_secondary_locations[release-pg17] or test_drain_with_secondary_locations[debug-pg17] or test_drain_with_secondary_locations[release-pg17] or test_drain_with_secondary_locations[release-pg17]"

Flaky tests (1)

Postgres 17

• test_change_pageserver: release-arm64-with-lfc

Test coverage report is not available

_{The comment gets automatically updated with the latest test results
53bdbdf at 2025-06-11T06:44:51.754Z :recycle:}