Checkmk Werk 7426: mk_postgres: fix the version detection when using an MK_CONFFILE

ID: 7426 Title: mk_postgres: fix the version detection when using an MK_CONFFILE Component: Checks & agents Level: 1 Class: Bug fix Version: 1.7.0i1 Since version 1.5.0p17 the version detection fails if an MK_CONFFILE is used and the psql binary cannot be found in the PATH. To resolve the issue the fixed version of the mk_postgres plugin has to be deployed on the affected hosts.