Add complete MNMD Docker deployment example with startup coordination and VolumeNotFound fix (#642)

* Initial plan

* Add MNMD Docker deployment example with 4 nodes x 4 drives

- Create docs/examples/mnmd/ directory structure
- Add docker-compose.yml with proper disk indexing (1..4)
- Add wait-and-start.sh for startup coordination
- Add README.md with usage instructions and alternatives
- Add CHECKLIST.md with step-by-step verification
- Fixes VolumeNotFound issue by using correct volume paths
- Implements health checks and startup ordering
- Uses service names for stable inter-node addressing

Co-authored-by: houseme <4829346+houseme@users.noreply.github.com>

* Add docs/examples README as index for deployment examples

Co-authored-by: houseme <4829346+houseme@users.noreply.github.com>

* Add automated test script for MNMD deployment

- Add test-deployment.sh with comprehensive validation
- Test container status, health, endpoints, connectivity
- Update README to reference test script
- Make script executable

Co-authored-by: houseme <4829346+houseme@users.noreply.github.com>

* improve code

* improve code

* improve dep crates `cargo shear --fix`

* upgrade aws-sdk-s3

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: houseme <4829346+houseme@users.noreply.github.com>
Co-authored-by: houseme <housemecn@gmail.com>

crates/ecstore/Cargo.toml

@@ -75,7 +75,6 @@ hyper-util.workspace = true
 hyper-rustls.workspace = true
 rustls.workspace = true
 tokio = { workspace = true, features = ["io-util", "sync", "signal"] }
-tokio-stream = { workspace = true }
 tonic.workspace = true
 xxhash-rust = { workspace = true, features = ["xxh64", "xxh3"] }
 tower.workspace = true
@@ -89,8 +88,6 @@ rustfs-madmin.workspace = true
 rustfs-workers.workspace = true
 reqwest = { workspace = true }
 aws-sdk-s3 = { workspace = true }
-once_cell = { workspace = true }
-rustfs-rsc = { workspace = true }
 urlencoding = { workspace = true }
 smallvec = { workspace = true }
 shadow-rs.workspace = true
@@ -99,13 +96,11 @@ rustfs-utils = { workspace = true, features = ["full"] }
 rustfs-rio.workspace = true
 rustfs-signer.workspace = true
 rustfs-checksums.workspace = true
-futures-util.workspace = true
 async-recursion.workspace = true
 aws-credential-types = { workspace = true }
 aws-smithy-types = { workspace = true }
 parking_lot = { workspace = true }
 moka = { workspace = true }
-aws-smithy-runtime-api = { workspace = true }
 
 [target.'cfg(not(windows))'.dependencies]
 nix = { workspace = true }