add password policy for white-spaces

application/src/main/java/org/thingsboard/server/service/security/system/DefaultSystemSecurityService.java

@@ -27,6 +27,7 @@ import org.passay.PasswordData;
 import org.passay.PasswordValidator;
 import org.passay.Rule;
 import org.passay.RuleResult;
+import org.passay.WhitespaceRule;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.cache.annotation.CacheEvict;
 import org.springframework.cache.annotation.Cacheable;
@@ -174,6 +175,9 @@ public class DefaultSystemSecurityService implements SystemSecurityService {
         if (isPositiveInteger(passwordPolicy.getMinimumSpecialCharacters())) {
             passwordRules.add(new CharacterRule(EnglishCharacterData.Special, passwordPolicy.getMinimumSpecialCharacters()));
         }
+        if (!passwordPolicy.getAllowWhitespaces()) {
+            passwordRules.add(new WhitespaceRule());
+        }
         PasswordValidator validator = new PasswordValidator(passwordRules);
         PasswordData passwordData = new PasswordData(password);
         RuleResult result = validator.validate(passwordData);

common/data/src/main/java/org/thingsboard/server/common/data/security/model/UserPasswordPolicy.java

@@ -35,6 +35,8 @@ public class UserPasswordPolicy implements Serializable {
     private Integer minimumDigits;
     @ApiModelProperty(position = 1, value = "Minimum number of special in the password." )
     private Integer minimumSpecialCharacters;
+    @ApiModelProperty(position = 1, value = "Allow white-spaces")
+    private Boolean allowWhitespaces;
 
     @ApiModelProperty(position = 1, value = "Password expiration period (days). Force expiration of the password." )
     private Integer passwordExpirationPeriodDays;