Modernizing "Create linux template" guide + Cloud-init integration steps (#215)

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* major refurbishment of the linux template guide

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* finishing touches on first release

* finishing touches

* Update _cloud_init.rst

* Update _create_linux.rst

* Update _cloud_init.rst

* Update _cloud_init.rst

* Update _cloud_init.rst

* cloud-init - ssh keys fix

When Cloud-init SSH module is configured to work on every boot instead of once-per-instance it will also regenerate the unique SSH host fingerprint (certifacte bundles) every time. This commit adds a configuration adjustment to the guide that disables this peculiarity.

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* Update source/adminguide/templates/_cloud_init.rst

Co-authored-by: Wei Zhou <weizhou@apache.org>

* Update source/adminguide/templates/_cloud_init.rst

Co-authored-by: Wei Zhou <weizhou@apache.org>

* Restore images

Co-authored-by: dredknight <yordank@office.corp>
Co-authored-by: Wei Zhou <weizhou@apache.org>
Co-authored-by: nvazquez <nicovazquez90@gmail.com>
2 files changed