Experimental support for non-redundant instances
Experimental support for non-redundant instances

This patch adds experimental support to hbal for non-redundant instances
(i.e.  instances with only one node). They are currently handled as
non-moveable, and as such the algorithm simply ignores them.

Supports needs to be added when reading from RAPI via hscan, and
probably in other corner cases.

mbakke/ganeti,mbakke/ganeti,ganeti/ganeti,dimara/ganeti,leshchevds/ganeti,grnet/snf-ganeti,onponomarev/ganeti,dimara/ganeti,ganeti-github-testing/ganeti-test-1,yiannist/ganeti,leshchevds/ganeti,leshchevds/ganeti,apyrgio/snf-ganeti,bitemyapp/ganeti,apyrgio/ganeti,ganeti/ganeti,ganeti/ganeti,grnet/snf-ganeti,andir/ganeti,onponomarev/ganeti,apyrgio/snf-ganeti,yiannist/ganeti,ganeti-github-testing/ganeti-test-1,bitemyapp/ganeti,andir/ganeti,andir/ganeti,apyrgio/ganeti,mbakke/ganeti,yiannist/ganeti