Information are automatically retrieved from the .git, .svn, etc. folders. Therefore, nothing has to be configured and no configuration will be taken into account.
Configuring the SCM Activity Plugin: SCM other than SVN, Git and Mercurial
Forcing the Retrieval of Blame Information
Note that a property should be added sooner or later to explicitly force this retrieval or not. See SONARPLUGINS-2359.
Subversion "Server certificate verification failed: issuer is not trusted"