[release tool] fix publishing to hashrelease VM

[radTuti]

Description

Fix using rsync to copy files to the VM by having a trailing slash at the end of the src directory to ensure it copies the content of the src directory into the destination rather than copying the src directory and its content into destination.

srcDir -> dest copies srcDir into dest to be accessed as dest/srcDir/<content>
srDir/ -> dest copies all the content in srcDir to dest to be accessed ast dest/<content>

Related issues/PRs

• [release-tool] publish hashrelease to VM and GCS #10577

Todos

• Tests
• Documentation
• Release note

Release Note

TBD

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[Copilot]

Pull Request Overview

This PR ensures that when using rsync to publish files to the hashrelease VM, the source directory is normalized with a trailing slash so that only its contents (not the directory itself) are copied.

• Moved srcDir normalization (trimming and adding /) into publishFiles and updated logs
• Adjusted log messages for clarity and consistency
• Updated rsync invocation to use the normalized srcDir for SSH publishing

Comments suppressed due to low confidence (2)

release/internal/hashreleaseserver/server.go:97

• [nitpick] The log field label srcDir is using the raw h.Source path, which may not reflect the normalized directory with the trailing slash used by rsync. Consider computing srcDir once and using that variable in all relevant logs for consistency.

		"srcDir":      h.Source,

release/internal/hashreleaseserver/server.go:125

• [nitpick] In the publishFiles Info log, srcDir is again set to the raw h.Source. It would be clearer to log the normalized srcDir (with trailing slash) that is actually used in the SSH rsync command.

		"srcDir":      h.Source,

[Copilot]

The normalization of srcDir is currently done right before the SSH rsync call, but it’s also needed (and named) in logs above. Consider moving this computation to the top of publishFiles so you can reuse the same srcDir variable for both logging and command invocation.