chore: remove dosfstools and mtools from container

[nmattia]

This moves the dostfstools and mtools binaries (suites) out of the container-installed packages and changes all build files & scripts to use the Bazel-provided versions instead.

[zeropath-ai]

✅ No security or compliance issues detected. Reviewed everything up to f174322.

Security Overview

• 🔎 Scanned files: 13 changed file(s)
• 🔗 Scan Link: https://zeropath.com/app/repositories/6992424c-495e-4621-b441-efd6821a4be6?scanId=11d927b3-744a-421e-8d4b-af3ce367758e&codeScanTypes=PrScan&tab=issues

Detected Code Changes

Change Type	Relevant files
Enhancement	► ic-os/dev-tools/bare_metal_deployment/deploy.py     Add mcopy tool path handling and integrate MCOPY usage in image injection flow ► ic-os/dev-tools/bare_metal_deployment/deploy.py     Pass mcopy_path to inject_config_into_image ► ic-os/dev-tools/bare_metal_deployment/tools.bzl     Expose --mcopy_tool flag and wire in mcopy path handling ► ic-os/dev-tools/build-setupos-config-image.sh     Use MCOPY environment variable for image config steps ► rs/ic_os/config/tool/BUILD.bazel     Set MCOPY environment variable for tests and pass through mcopy tool path ► rs/ic_os/os_tools/guest_vm_runner/BUILD.bazel     Provide MCOPY to tests via env and data dependencies ► rs/tests/driver/assets/create-universal-vm-config-image.sh     Use MKFS_FAT and MCOPY variables for image creation ► rs/tests/driver/src/driver/bootstrap.rs     Document that MKFS_FAT/MCOPY/MLABEL are provided by system test rules ► rs/tests/driver/src/driver/universal_vm.rs     Document in-container path handling for tool env vars ► rs/tests/run_systest.sh     Add logic to rewrite MKFS_FAT/MCOPY tool paths for container runtime ► rs/tests/system_tests.bzl     Add runtime deps MKFS_FAT/MCOPY/MLABEL mappings for Bazel tests ► third_party/BUILD.mtools.bazel     Add mlabel to mtools tool suite and expose as public filegroup
Bug Fix
Refactor
Configuration changes

[basvandijk]

Nice! You got it working!