Croud

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- Added new subcommand ``subscriptions create`` that allows superusers to
create custom subscriptions.

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- Added new subcommand ``clusters change-product`` that allows organizations and
project admins to change the cluster product.

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- Updated ``regions create`` to require the org-id and removed unnecessary arguments.

- Changed the products CLI to filter out duplicates, deprecated products and products
without prices.

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- Added new subcommand ``clusters set-suspended-state`` that allows superusers,
organization admins and project admins to suspend or resume a cluster.

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- Fix help message for disk size argument in ``clusters deploy``

- Updated ``clusters deploy`` to use the new cluster provisioning API. This brings
back the ability for regular users to create clusters via croud.

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- Added autocompletions for bash/zsh/tcsh

- Added new subcommand ``clusters expand-storage`` that allows superusers and
organization admins to expand the disk size of a cluster.

- Add GitHub and Google to the idp list