fix handling of curly braces in KEYS (#263)

Author: dev-hanz-ops

src/main/java/com/github/fppt/jedismock/Utils.java

@@ -82,6 +82,9 @@ public static String createRegexFromGlob(String glob)
                 case '\\':
                     out.append("\\\\");
                     break;
+                case '{':
+                    out.append("\\{");
+                    break;
                 default:
                     out.append(c);
             }

src/test/java/com/github/fppt/jedismock/comparisontests/keys/KeysOperationsTest.java

@@ -99,4 +99,13 @@ public void testPersist(Jedis jedis) throws Exception {
         //Check that the value is still there
         assertEquals("v", jedis.get("a"));
     }
+
+    @TestTemplate
+    public void handleCurlyBraces(Jedis jedis) {
+        jedis.mset("{hashslot}:one", "1", "{hashslot}:two", "2", "three", "3");
+
+        Set<String> results = jedis.keys("{hashslot}:*");
+        assertEquals(2, results.size());
+        assertTrue(results.contains("{hashslot}:one") && results.contains("{hashslot}:two"));
+    }
 }