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

	func TestWslSocketPath(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!