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1) Move the hooks environment dict generator inside the object. This
also adds missing values such as network family and uuid.
2) Use the same generator both for the os environment and for the
instance hooks.
3) Update manpage and hooks documentation.

Also update a forgotten docstring about a tuple's content.
Signed-off-by: Guido Trotter <ultrotter@google.com>
Reviewed-by: Michael Hanselmann <hansmi@google.com>

When the man pages' reST is built using Sphinx, “bash” must be used
instead of “Bash”. Pandoc works with both.
Signed-off-by: Michael Hanselmann <hansmi@google.com>
Reviewed-by: Guido Trotter <ultrotter@google.com>

This is a "better than nothing" support, just for kvm and just joining
the machine to the opevswitch bridge with the right command.
Signed-off-by: Guido Trotter <ultrotter@google.com>
Reviewed-by: Iustin Pop <iustin@google.com>
Reviewed-by: René Nussbaumer <rn@google.com>

Instead of using the sphinx-specific highlight extension, which is not
parsed by Pandoc, let's switch to the standard RST directive, which
will be picked up and will result in slightly nicer man pages when
converted to HTML (in man output it remains the same).

Note that I've converted only some of the examples (the one that
actually had shell scripts); the ones that show command lines
(e.g. starting with '#') I didn't convert, as they don't look nice
(and Pandoc/Kate highlighting doesn't have the equivalent of our
shell-example lexer we use in sphinx).
Signed-off-by: Iustin Pop <iustin@google.com>
Reviewed-by: Helga Velroyen <helgav@google.com>

Per a conversation on ganeti@googlegroups.com:

  - gnt-os diagnose ; gnt-os list take in consideration blank lines in
   /etc/ganeti/instance-image/variants.list that could be confusing.

Let's fix this and also let's ignore comment lines.
Signed-off-by: Iustin Pop <iustin@google.com>
Reviewed-by: Michael Hanselmann <hansmi@google.com>

The OS scripts currently run with the whole noded environment; this is
different from the hooks which run with a cleared one and most likely
an oversight.

This _might_ create problems when upgrading, so it needs to be clearly
announced for the new version.
Signed-off-by: Iustin Pop <iustin@google.com>
Reviewed-by: Michael Hanselmann <hansmi@google.com>

This removes:

- the check in backend that such OSes have a variants file or if it
  exists that is non-empty; in order for this to work, we also rework
  the logic in backend._TryOSFromDisk to allow for optional OS files
- the check in cluster verify such OSes to have a non-empty variant
  list (the check for consistent variants is still kept)
Signed-off-by: Iustin Pop <iustin@google.com>
Reviewed-by: Michael Hanselmann <hansmi@google.com>

In order to make the display right on 80-columns terminals.
Signed-off-by: Iustin Pop <iustin@google.com>
Reviewed-by: Guido Trotter <ultrotter@google.com>

Signed-off-by: Stephen Shirley <diamond@google.com>
Reviewed-by: Iustin Pop <iustin@google.com>

No rewrapping is done in this patch, just updates to the settings.
Signed-off-by: Michael Hanselmann <hansmi@google.com>
Reviewed-by: René Nussbaumer <rn@google.com>

Also replace one UTF-8 char with the ASCII equivalent, not all Pandoc
versions support it.
Signed-off-by: Iustin Pop <iustin@google.com>
Reviewed-by: René Nussbaumer <rn@google.com>

Signed-off-by: Iustin Pop <iustin@google.com>
Reviewed-by: Michael Hanselmann <hansmi@google.com>

Signed-off-by: Iustin Pop <iustin@google.com>
Reviewed-by: René Nussbaumer <rn@google.com>