v18.2.8
doc/start: add vstart install guide
doc/start/ceph.conf: trim the sample ceph.conf file
doc/start: edit documenting-ceph.rst
doc/start: update mailing list links
doc: Fixes a typo in controllers section of hardware recommendations
doc/start: Mention RGW in Intro to Ceph
doc: Clarify the status of MS Windows client support
doc: remove references to ceph-deploy