Merge branch 'fix-role-based-on-1.7.0' into 'release/1.7.1'

Fix role based on 1.7.0

See merge request !135

src/main/java/net/geant/nmaas/portal/api/security/JWTTokenService.java

@@ -19,6 +19,7 @@ import java.util.Collections;
 import java.util.Date;
 import java.util.List;
 import java.util.UUID;
+import java.util.stream.Collectors;
 
 @Service("jwtTokenService")
 @NoArgsConstructor
@@ -82,7 +83,7 @@ public class JWTTokenService {
                                 role ->
                                         role.getRole().toString()
                         )
-                        .toArray(String[]::new)
+                        .collect(Collectors.toSet())
                 )
                 .claim(LANGUAGE, user.getSelectedLanguage())
                 .signWith(getSignInKey(jwtSettings.getSigningKey()), SignatureAlgorithm.HS512)