Introducing new outputs and test outputs and randomising resource names

[ewastempel]

This PR is to do with the ministryofjustice/modernisation-platform#4803 issue.

This issue is already implemented, but this PR is to improve the terratests that are in place.
This change is to introduce new outputs in the module and to use them later on in the terratests. This change is also adding random values to resources names in the terratests to allow smooth standing up and tearing down of the test environments.
This has been tested locally.

[github-actions]

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Running TFSEC in .
Excluding the following checks: AWS089, AWS099, AWS009, AWS097, AWS018

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tfsec is joining the Trivy family

tfsec will continue to remain available 
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You can read more here: 
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