Added 1 dummy test for valkey

Signed-off-by: Hanxi Zhang <hanxizh@amazon.com>

Author: hanxizh9910

tests/unit/dummy-flaky.tcl

@@ -0,0 +1,12 @@
+start_server {tags {"dummy"}} {
+    test "dummy-flaky - normal failure" {
+        r SET mykey myvalue
+        assert_equal [r GET mykey] "wrongvalue"
+    }
+
+    test "dummy-flaky - passing test" {
+        r SET counter 0
+        r INCR counter
+        assert_equal [r GET counter] "1"
+    }
+}