Checkmk Werk 14354: Fix sftp check if invalid ssh key exists

ID: 14354 Title: Fix sftp check if invalid ssh key exists Component: Checks & agents Level: 1 Class: Bug fix Version: 2.2.0i1 The SFTP check used to fail with username/password if an SSH key exists that doesn't allow access to the SFTP server and no ssh key was specified to be used. The search for private keys in the ~/.ssh folder is now disabled by default. It can be turned on again in the sftp check rulespec.