try all args in one string for powershell

test/integration/functional_test.go

@@ -840,7 +840,7 @@ func validateSSHCmd(ctx context.Context, t *testing.T, profile string) {
 	var rr *RunResult
 	var err error
 	if runtime.GOOS == "windows" { // golang exec powershell needs some tricks !
-		cmd := exec.CommandContext(ctx, Target(), "-p", profile, "ssh", "cat /etc/hostname")
+		cmd := exec.CommandContext(ctx, Target(), "-p profile ssh cat /etc/hostname")
 		t.Logf("about to run %s: ", cmd.Args)
 		rr, err = Run(t, cmd, true)
 		t.Logf("rr is  %+v: \n", rr)