io: fix temp directory used by test-io-channel-tls test

The test-io-channel-tls test was mistakenly using two of the
same directories as test-crypto-tlssession. This causes a
sporadic failure when using make -j$BIGNUM.

Reported-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>

tests/test-io-channel-tls.c

@@ -127,8 +127,8 @@ static void test_io_channel_tls(const void *opaque)
     /* We'll use this for our fake client-server connection */
     g_assert(socketpair(AF_UNIX, SOCK_STREAM, 0, channel) == 0);
 
-#define CLIENT_CERT_DIR "tests/test-crypto-tlssession-client/"
-#define SERVER_CERT_DIR "tests/test-crypto-tlssession-server/"
+#define CLIENT_CERT_DIR "tests/test-io-channel-tls-client/"
+#define SERVER_CERT_DIR "tests/test-io-channel-tls-server/"
     mkdir(CLIENT_CERT_DIR, 0700);
     mkdir(SERVER_CERT_DIR, 0700);