Checkmk Werk 11627: ceph_df: support Ceph 14.2.4

ID: 11627 Title: ceph_df: support Ceph 14.2.4 Component: Checks & agents Level: 1 Class: Bug fix Version: 2.0.0i2 This werk adds support for Ceph 14.2.4 to the check plugin <tt>ceph_df</tt>. This is necessary because a new column <tt>PGS</tt> was added to the output of <tt>ceph df detail</tt>.