[GIS.lab] Ansible 2 upgrade for GIS.lab Web development environment

[Ivan Mincik]

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Dear devs,
since now Ansible 2 is required to run GIS.lab Web development environment.
Please upgrade.

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Ivan Minčík
ivan.mincik at gmail.com  GPG: 0x79529A1E  http://imincik.github.io/0x79529A1E.key
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