Setup: Store StackHead version on server

[saitho]

• Please check if the PR fulfills these requirements

• The commit message follows our guidelines
• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

• What kind of change does this PR introduce? (Bug fix, feature, docs update, ...)

Feature

• What is the current behavior? (You can also link to an open issue here)

No information on the version of StackHead used during server setup is stored.

• What is the new behavior (if this is a feature change)?

When setting up a server the file /stackhead/VERSION is created, which is a copy of the VERSION file from the Ansible collection which is created before building the collection.

Before a project is deployed the StackHead version is checked. If the version on the host machine does not match the major version than deployed on the server, the process aborts with an error. E.g. it will not be possible to deploy onto a server that has been setup with StackHead 1.0.0 if the host uses 2.0.0.
In this case the server has to be re-setup with the new StackHead version.

• Does this PR introduce a breaking change? (What changes might users need to make in their application due to this PR?)

Yes: Server has to be re-setup as the file /stackhead/VERSION needs to be created.

• Other information:

[stackhead-bot]

🎉 This PR is included in version 1.0.0 🎉

The release is available on GitHub release

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