fix: avoid sending HEAD bodies over TLS HTTP/2 (#2648)

Signed-off-by: 唐小鸭 <tangtang1251@qq.com>
Signed-off-by: houseme <housemecn@gmail.com>
Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>
Co-authored-by: houseme <housemecn@gmail.com>
Co-authored-by: loverustfs <hello@rustfs.com>

scripts/tls_gen.md

@@ -0,0 +1,35 @@
+# TLS Bundle Generator
+
+Generate a local TLS/mTLS certificate bundle for RustFS tests with:
+
+```bash
+cargo run -p e2e_test --bin tls_gen -- --out-dir target/tls
+```
+
+Overwrite an existing bundle with:
+
+```bash
+cargo run -p e2e_test --bin tls_gen -- --out-dir target/tls --force
+```
+
+Change the validity window with:
+
+```bash
+cargo run -p e2e_test --bin tls_gen -- --out-dir target/tls --days 30
+```
+
+Generated files:
+
+- `rustfs_cert.pem`
+- `rustfs_key.pem`
+- `ca.crt`
+- `public.crt`
+- `client_ca.crt`
+- `client_cert.pem`
+- `client_key.pem`
+
+Notes:
+
+- The command refuses to overwrite existing bundle files unless `--force` is set.
+- `--days` must be a positive integer.
+- The default output directory is `target/tls`.