This patch fixes the gnt-instance batch-create command, and in doing so
also slightly changes two other functions:
  - we change utils.ParseUnit so that it accepts integer values also
    (both ParseUnit(5) and ParseUnit("5") return the same value)
  - a bridge 'None' in LUCreateInstance will be converted to the default
    bridge; currently only missing bridges will be accepted to mean the
    default one

The main changes to batcher were the change to variable number of disks
and NICs.

The patch also adds a batcher-instances.json example file copied from
the 1.2 branch and properly modified.

Reviewed-by: imsnah, killerfoxi

This patch changes the iallocator framework to work with and properly
export to plugins offline nodes. It does this by only exporting the
static configuration data for those nodes, and not attempting to parse
the runtime data.

The patch also fixes bugs in iallocator related to the RpcResult
conversion, changes the should_run to admin_up attribute name (as per
the internals change), and adds “-I” as a short option for
“--iallocator” in gnt-instance, gnt-backup and burnin.

Reviewed-by: ultrotter

With the new SSL client certificate stuff it's no longer needed.

Reviewed-by: iustinp

This patch removes the client-api.txt document (since it's obsoleted by
the documentation inside the design-2.0.rst document) and adds many
updates to the latter.

Reviewed-by: imsnah

This adds a simple diagram for the cluster architecture and also adds a
dependency on graphviz (both doc and in configure).

Reviewed-by: imsnah

This patch combines all the design documents for 2.0 except the
security one into a single document, in order to ease reading and reduce
duplication of information.

Future patches will start removing wrong pointers to old document names
and some better integration between the sections.

Reviewed-by: imsnah

In the end we ended up taking a slightly different approach for
import/export than the one discussed in the design doc, after
trying/talking about a few more alternatives. Document this in the
document.

Reviewed-by: iustinp

Please configure your editors to strip it, or enable your git hooks...

Reviewed-by: ultrotter

In rst a final _ is used for linking. Escaping it prevents an error at
compile time on design-2.0-cluster-parameters.rst

Reviewed-by: iustinp

Internally in ganeti we already have renamed the instance, so it's
better to pass the new name in INSTANCE_NAME and the old one in
OLD_INSTANCE_NAME rather than the old name in INSTANCE_NAME and the new
one in NEW_INSTANCE_NAME as this reflects what the cluster thinks.

Reviewed-by: iustinp

Update the design about cluster parameters and provide
some example of backend parameters. By now this includes
all supported parameters.

Reviewed-by: iustinp, ultrotter

Reviewed-by: imsnah

As discussed, we update the design doc with the three classes of
parameters and other changes.

Reviewed-by: imsnah

This clarifies the job storage and the reason for choosing it.

Reviewed-by: imsnah

With change 1773 a new status WAITLOCK was introduced if a job/opcode is
waiting for a lock. This change updates the document about the job-queue
accordingly.

Reviewed-by: iustinp

Reviewed-by: imsnah

Reviewed-by: iustinp

The idea is that if the OSes will support multiple version (e.g. both
1.2 and 2.0), then Ganeti should be able to talk to it using version
2.0, but then the script needs to be told nicely what version Ganeti is
using.

Reviewed-by: imsnah

This patch changes formatting and the DRBD shared secret details, and
adds master daemon socket details to the security doc.

Reviewed-by: imsnah

Reviewed-by: imsnah

Reviewed-by: imsnah

This is just some additions of not-yet-mentioned docs.

Reviewed-by: ultrotter

Reviewed-by: iustinp

Reviewed-by: ultrotter

Reviewed-by: imsnah

Reviewed-by: imsnah

Reviewed-by: iustinp

Reviewed-by: iustinp

It said CLI/RAPI will talk to master using HTTP, which isn't true. Add
a reference to job queue design document. Small typos.

Reviewed-by: iustinp

Reviewed-by: iustinp

Reviewed-by: iustinp

Before we were discussing this possible future feature, and its
drawbacks, but not its usefulness. This patch corrects this.

Reviewed-by: iustinp

Reviewed-by: iustinp

Reviewed-by: iustinp

Reviewed-by: iustinp

This will be an overview document, enumerating the changes without going
into details and pointing to the actual documents.

Reviewed-by: ultrotter

Reviewed-by: imsnah

It's not complete, but I hope it's up to date. It's restructured text,
but no make rules or such for html output are needed, it's readable
as-is.

Reviewed-by: imsnah

The previous description was unclear. Reported by Guido Trotter.

Reviewed-by: ultrotter

Also change title formatting to match client-api.txt.

Reviewed-by: iustinp