Checkmk Werk 8806: mk_oracle: Fixed discovery of XE instances on Oracle 18c

ID: 8806 Title: mk_oracle: Fixed discovery of XE instances on Oracle 18c Component: Checks & agents Level: 1 Class: Bug fix Version: 1.7.0i1 In newer version of Oracle (at least since 18c) the instance name is not pinned to XE if the free version is used. The discovery pattern for running instance does now represent this change.