cleanup(pam/integration-tests/cli): Do not build the module and pam c…

…lients for each test (#409)

Since commit d1a75d8, for the cli tests we call prepareClientTest()
for each test in order to get the client folder, however this also
implies building the test client, the module and the exec client for
each test even though this is not needed, since we can share those
binaries.

So just call this once in the main test.

Ideally this should make CI a little quicker.

pam/integration-tests/cli_test.go

@@ -28,6 +28,9 @@ func TestCLIAuthenticate(t *testing.T) {
 	currentDir, err := os.Getwd()
 	require.NoError(t, err, "Setup: Could not get current directory for the tests")
 
+	clientPath := t.TempDir()
+	cliEnv := prepareClientTest(t, clientPath)
+
 	tests := map[string]struct {
 		tape string
 
@@ -71,8 +74,10 @@ func TestCLIAuthenticate(t *testing.T) {
 			t.Parallel()
 
 			outDir := t.TempDir()
+			err := os.Symlink(filepath.Join(clientPath, "pam_authd"),
+				filepath.Join(outDir, "pam_authd"))
+			require.NoError(t, err, "Setup: symlinking the pam client")
 
-			cliEnv := prepareClientTest(t, outDir)
 			cliLog := prepareCLILogging(t)
 			t.Cleanup(func() {
 				saveArtifactsForDebug(t, []string{