Improve the description of config password.policy.minimum.digits (#7989)

Author: winterhazel

server/src/main/java/com/cloud/user/PasswordPolicy.java

@@ -25,7 +25,8 @@ public interface PasswordPolicy {
             Integer.class,
             "password.policy.minimum.special.characters",
             "0",
-            "Minimum number of special characters that the user's password must have. The value 0 means the user's password does not require any special characters.",
+            "Minimum number of special characters that the user's password must have. Any character that is neither a letter nor numeric is considered special. " +
+                    "The value 0 means the user's password does not require any special characters.",
             true,
             ConfigKey.Scope.Domain);
 
@@ -43,7 +44,7 @@ public interface PasswordPolicy {
             Integer.class,
             "password.policy.minimum.uppercase.letters",
             "0",
-            "Minimum number of uppercase letters that the user's password must have. The value 0 means the user's password does not require any uppercase letters.",
+            "Minimum number of uppercase letters [A-Z] that the user's password must have. The value 0 means the user's password does not require any uppercase letters.",
             true,
             ConfigKey.Scope.Domain);
 
@@ -52,7 +53,7 @@ public interface PasswordPolicy {
             Integer.class,
             "password.policy.minimum.lowercase.letters",
             "0",
-            "Minimum number of lowercase letters that the user's password must have. The value 0 means the user's password does not require any lowercase letters.",
+            "Minimum number of lowercase letters [a-z] that the user's password must have. The value 0 means the user's password does not require any lowercase letters.",
             true,
             ConfigKey.Scope.Domain);
 
@@ -61,7 +62,7 @@ public interface PasswordPolicy {
             Integer.class,
             "password.policy.minimum.digits",
             "0",
-            "Minimum number of digits that the user's password must have. The value 0 means the user's password does not require any digits.",
+            "Minimum number of numeric characters [0-9] that the user's password must have. The value 0 means the user's password does not require any numeric characters.",
             true,
             ConfigKey.Scope.Domain);