This removes some constraints:
  - only two disks supported, this is no longer true as the underlying
    functions can now compute size for a variable number of disks
  - error when the hypervisor was not being passed
  - typo error

Reviewed-by: imsnah

The submit function was using a very old API. This patch brings it up to
date.

Reviewed-by: imsnah

Reviewed-by: imsnah

Some names were wrong, and similar stuff detected by pylint.
gnt-debug.GenericOpCode is still broken.

Reviewed-by: imsnah

Currently the gnt-* scripts are using a mix of print, logger.ToStd* and
sys.stderr.write. We convert them all to using cli.ToStdout/err. This
way, we can easily change the implementation for all at once.

Reviewed-by: imsnah

The old API is no longer working.

Reviewed-by: ultrotter

[Trunk version]

Reviwed-by: imsnah

This reverts commit 976.

Reviewed-by: ultrotter

[Forward-port of the 1.2 branch patch]

This patch removes all the parameters and options from the output
"gnt-X" (i.e. the subcommand list for command). This is done in order to
uniformize the output, currently only some parameters are shown and they
are not always consistent (e.g. required versus important parameters).

Reviewed-by: ultrotter

In preparation for the introduction of automatic instance allocator,
this patch adds an allocator simulation opcode, that based on the input
parameters, will return either the input message to the allocator
(implemented) or the result of the allocator run (not yet implemented).

This allows algorithm tests against simulated allocations and the
current cluster state.

The patch adds the following:
  - a function that generates the generic cluster information for the
    allocator
  - a function that generates the 'new instance' information
  - a function that generates the 'replace_secondary' information

These three functions will be used by the allocator framework later to
generate the actual information for the external algorithms. Currently
we just return the json-serialized text.

Reviewed-by: imsnah

This patch enhances gnt-debug to be able to submit any opcodes. The
opcodes are input from a json file containing a list of opcodes.

This allows enhanced testing of opcodes until the other gnt-* commands
are converted to use the master daemon.

Reviewed-by: ultrotter

This patch adds a script which submits a job consisting of the
OpTestDelay opcode. This can be helpful for debugging and can be
extended to execute other 'debug'-like tasks.

Reviewed-by: ultrotter