increase timeout for E2BIG test

Change-Id: Iebc697fa66918755979450ca96f4e3681813220f
Reviewed-on: https://review.couchbase.org/c/libcouchbase/+/168843
Tested-by: Build Bot <build@couchbase.com>
Reviewed-by: Brett Lawson <brett19@gmail.com>

Author: avsej

tests/iotests/t_misc.cc

@@ -936,6 +936,8 @@ TEST_F(MockUnitTest, testAppendE2BIG)
     lcb_cmdstore_create(&scmd, LCB_STORE_UPSERT);
     lcb_cmdstore_key(scmd, key, nkey);
     lcb_cmdstore_value(scmd, (const char *)value1, nvalue1);
+    /* connection to cbdyncluster might be slow, and uploading 20MiB takes some time */
+    lcb_cmdstore_timeout(scmd, 60000000 /* 60 seconds */);
     err = lcb_store(instance, &res, scmd);
     ASSERT_EQ(LCB_SUCCESS, err);
     lcb_cmdstore_destroy(scmd);