[ReleaseNote] Add release note for v0.17.0rc1 (#7240)

### What this PR does / why we need it?
This pull request adds the release notes for `v0.17.0rc1`. It also
updates version numbers across various documentation files, including
`README.md`, `README.zh.md`,
`docs/source/community/versioning_policy.md`, and `docs/source/conf.py`
to reflect the new release.

- vLLM version: v0.17.0
- vLLM main:
4034c3d32e

.github/workflows/schedule_image_build_and_push.yaml

@@ -30,6 +30,7 @@ on:
         type: choice
         options:
           - main
+          - v0.17.0rc1
           - v0.16.0rc1
           - v0.15.0rc1
           - v0.14.0rc1

.github/workflows/schedule_update_estimated_time.yaml

@@ -28,7 +28,7 @@ jobs:
     name: e2e-test
     strategy:
       matrix:
-        vllm_version: [v0.16.0]
+        vllm_version: [v0.17.0]
         type: [full, light]
     uses: ./.github/workflows/_e2e_test.yaml
     with: