[#43] `run-bats-tests` script added.

[DK318]

Description

Problem

In order to run bats tests you need to manually start vault and then run make bats.

Solution

Added script that starts two instances of vault, runs bats tests and after all kills these two instances.

Related issue(s)

• Fixes #43

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Related changes (conditional)

• Tests

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  • Haddock

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