command: change drive to lowercase for wsl path

[jsternberg]

- What I did

On Windows, the drive casing doesn't matter outside of WSL. For WSL, the drives are lowercase. When we're producing a WSL path, lowercase the drive letter.

- How I did it

Called strings.ToLower on the drive when creating the WSL path.

- How to verify it

- Description for the changelog

* Use lowercase windows drive letter for WSL metrics path

- A picture of a cute animal (not mandatory but encouraged)

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 59.75%. Comparing base (a4619f3) to head (9f0a594).

Additional details and impacted files

@@ Coverage Diff @@## master #5445 +/- ##
=======================================
Coverage 59.75% 59.75% =======================================
Files 345 345 Lines 23428 23428 =======================================
Hits 13999 13999 Misses 8455 8455 Partials 974 974 

[thaJeztah]

Can you add (or update) a test-case in

cli/cli/command/telemetry_docker_test.go

Lines 11 to 29 in a4619f3

	funcTestWslSocketPath(t*testing.T) {
	u, err:=url.Parse("unix:////./c:/my/file/path")
	assert.NilError(t, err)
	// Ensure host is empty.
	assert.Equal(t, u.Host, "")
	// Use a filesystem where the WSL path exists.
	fs:= fstest.MapFS{
	"mnt/c/my/file/path": {},
	}
	assert.Equal(t, wslSocketPath(u.Path, fs), "/mnt/c/my/file/path")
	// Use a filesystem where the WSL path doesn't exist.
	fs= fstest.MapFS{
	"my/file/path": {},
	}
	assert.Equal(t, wslSocketPath(u.Path, fs), "")
	}

?

(could be a test-table if we want to add more cases to it)

[laurazard]

@thaJeztah can you TAL?

[thaJeztah]

LGTM, thanks!