add filtering for selecting or excluding attributes in attribute ArchiversErrorList

archiversmonitor/src/main/java/org/tango/archiving/server/archiver/ArchiversMonitor.java

@@ -126,6 +126,7 @@ public class ArchiversMonitor {
     public void setExcludedAttributes(final String[] excludedAttributes) {
         this.excludedAttributes = excludedAttributes;
         excludedAttributesRegex = getRegexList(excludedAttributes);
+        if (!excludedAttributesRegex.isEmpty())
             doFilterAttributes = true;
         logger.info("will exclude attributes with regex = {}", selectedAttributesRegex);
     }
@@ -146,6 +147,7 @@ public class ArchiversMonitor {
         this.selectedAttributes = selectedAttributes;
         selectedAttributesRegex = getRegexList(selectedAttributes);
         logger.info("will select attributes with regex = {}", selectedAttributesRegex);
+        if (!selectedAttributesRegex.isEmpty())
             doFilterAttributes = true;
     }