Fix tcp_relay_test by adding a second bootstrap node.

This is a non-hermetic network test. initramfs node is down, so let's
have a second one for redundancy.

auto_tests/tcp_relay_test.c

@@ -7,7 +7,14 @@
 #include "../testing/misc_tools.h"
 #include "check_compat.h"
 
-static uint8_t const key[] = {
+static uint8_t const key1[] = {
+    0x02, 0x80, 0x7C, 0xF4, 0xF8, 0xBB, 0x8F, 0xB3,
+    0x90, 0xCC, 0x37, 0x94, 0xBD, 0xF1, 0xE8, 0x44,
+    0x9E, 0x9A, 0x83, 0x92, 0xC5, 0xD3, 0xF2, 0x20,
+    0x00, 0x19, 0xDA, 0x9F, 0x1E, 0x81, 0x2E, 0x46,
+};
+
+static uint8_t const key2[] = {
     0x3F, 0x0A, 0x45, 0xA2, 0x68, 0x36, 0x7C, 0x1B,
     0xEA, 0x65, 0x2F, 0x25, 0x8C, 0x85, 0xF4, 0xA6,
     0x6D, 0xA7, 0x6B, 0xCA, 0xA6, 0x67, 0xA4, 0x9E,
@@ -23,10 +30,15 @@ int main(void)
     Tox *tox_tcp = tox_new_log(opts, nullptr, nullptr);
     tox_options_free(opts);
 
-    tox_bootstrap(tox_tcp, "tox.initramfs.io", 33445, key, nullptr);
+    tox_bootstrap(tox_tcp, "78.46.73.141", 33445, key1, nullptr);
+    tox_bootstrap(tox_tcp, "tox.initramfs.io", 33445, key2, nullptr);
 
     Tox_Err_Bootstrap tcp_err;
-    tox_add_tcp_relay(tox_tcp, "tox.initramfs.io", 33445, key, &tcp_err);
+    tox_add_tcp_relay(tox_tcp, "78.46.73.141", 33445, key1, &tcp_err);
+    ck_assert_msg(tcp_err == TOX_ERR_BOOTSTRAP_OK,
+                  "attempting to add tcp relay returned with an error: %d",
+                  tcp_err);
+    tox_add_tcp_relay(tox_tcp, "tox.initramfs.io", 33445, key2, &tcp_err);
     ck_assert_msg(tcp_err == TOX_ERR_BOOTSTRAP_OK,
                   "attempting to add tcp relay returned with an error: %d",
                   tcp_err);