LIVY-1062: Handle HTTP 307 redirects for POST/DELETE in LivyConnection

[nileshrathi345]

What changes were proposed in this pull request?

Handle HTTP 307 Temporary Redirect in LivyConnection.sendRequest() so the Java HTTP client (client-http) retries POST, DELETE, and multipart requests to the Location URL instead of failing with IOException: Temporary Redirect.

Apache HttpClient follows redirects automatically for GET, but not for non-idempotent methods. LivyConnection.sendRequest() previously treated any non-200 response as fatal, so POST/DELETE/multipart calls failed whenever the server returned 307.

Also validates that Location is present/non-empty and consumes the redirect response entity before retry.

JIRA: LIVY-1062

How was this patch tested?

Unit tests in LivyConnectionSpec:

• Happy path: POST (JSON), DELETE, and multipart POST via a mock standby server returning 307 to an active server — verifies method, headers (X-Requested-By), body, and response type are preserved.
• Failure paths: missing/empty Location, redirect loop, non-redirect 404.

Was this patch authored or co-authored using generative AI tooling?

Yes, this was co-authored using Cursor to write the new test cases.

Generated-by: Cursor Composer, Cursor 3.13.21

[nileshrathi345]

Closing PR as this is more likely related to HA part which is not supported yet.