Fix definition of OpenStack project type

Previously project type OpenStack included all repos under openstack,
openstack-dev and openstack-infra. However this introduced inconsistency
where some module may have repo at stackforge, but at the same time
included into incubated. The new definition is strictly according to
governance project list: integrated, incubated, others and governance
itself.

Also removing project types infra and documentation since they exist
in modules and may misleadingly treated as sub-groups.

Note that project type All still encounters all repos from organizations,
so there may be a case when some repo is located at openstack, but not
included into OpenStack project type

Change-Id: If710327f5bd3b88924d8ca668a44ea64e518a1fc