Add 'good' as a valid value for plugins.security.restapi.password_score_based_validation_strength (opensearch-project#5119)

Signed-off-by: Craig Perkins <cwperx@amazon.com>

Author: cwperks

src/main/java/org/opensearch/security/dlic/rest/validation/PasswordValidator.java

@@ -131,9 +131,10 @@ public enum ScoreStrength {
 
         private final String description;
 
-        static final List<ScoreStrength> CONFIGURATION_VALUES = ImmutableList.of(FAIR, STRONG, VERY_STRONG);
+        static final List<ScoreStrength> CONFIGURATION_VALUES = ImmutableList.of(FAIR, GOOD, STRONG, VERY_STRONG);
 
         static final String EXPECTED_CONFIGURATION_VALUES = new StringJoiner(",").add(FAIR.name().toLowerCase(Locale.ROOT))
+            .add(GOOD.name().toLowerCase(Locale.ROOT))
             .add(STRONG.name().toLowerCase(Locale.ROOT))
             .add(VERY_STRONG.name().toLowerCase(Locale.ROOT))
             .toString();