CR-911 Fix for OPENAM-1867: Document the use of FQDN mapping feature in OpenAM for multi-tenant scenario

git-svn-id: https://svn.forgerock.org/openam@4120 0f4defcf-c51a-4c67-9f44-6fb5eba73c5d
Moving the Action methods from ReadOnlyResource to the SessionResource.

git-svn-id: https://svn.forgerock.org/openam@4121 0f4defcf-c51a-4c67-9f44-6fb5eba73c5d