Add BNF rule to accept multiple properties in INDEX operations (#83)

* Add BNF rule to accept multiple properties in INDEX operations

close #70

* Update tests

* Catch UnresolvedAddressException and throw ClientException

Author: skibish

database/neo4j/src/main/java/com/neueda/jetbrains/plugin/graphdb/database/neo4j/bolt/Neo4jBoltDatabase.java

@@ -10,7 +10,9 @@
 import org.neo4j.driver.v1.Record;
 import org.neo4j.driver.v1.Session;
 import org.neo4j.driver.v1.StatementResult;
+import org.neo4j.driver.v1.exceptions.ClientException;
 
+import java.nio.channels.UnresolvedAddressException;
 import java.util.Collections;
 import java.util.List;
 import java.util.Map;
@@ -64,6 +66,8 @@ public GraphQueryResult execute(String query, Map<String, Object> statementParam
             long endTime = System.currentTimeMillis();
 
             return new Neo4jBoltQueryResult(endTime - startTime, buffer);
+        } catch (UnresolvedAddressException e) {
+            throw new ClientException(e.getMessage());
         }
     }