Document --no-capacity-checks in the hail man page
Document --no-capacity-checks in the hail man page

Also explain that N+1 redundancy for DRBD instances is always checked,
whereas global N+1 redundancy checks (mainly involving shared-storage
instances) can be disabled.

Signed-off-by: Klaus Aehlig <4ce51de36d9068cd7db2eec1151e0f3f95419008@google.com>
Reviewed-by: Petr Pudlak <9d19625f8ee825a2c398462ed335cbcf98f79c32@google.com>

andir/ganeti,bitemyapp/ganeti,mbakke/ganeti,dimara/ganeti,ganeti/ganeti,onponomarev/ganeti,mbakke/ganeti,yiannist/ganeti,andir/ganeti,ganeti/ganeti,yiannist/ganeti,andir/ganeti,grnet/snf-ganeti,leshchevds/ganeti,leshchevds/ganeti,leshchevds/ganeti,mbakke/ganeti,ganeti/ganeti,onponomarev/ganeti,dimara/ganeti,bitemyapp/ganeti,yiannist/ganeti,grnet/snf-ganeti