Deploying sra examples multiple times using same stackset

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### Is your feature request related to a problem? Please describe

I wanted to deploy multiple conformance packs using the security reference architecture solution but currently it is not possible.

### Describe the solution you'd like

The ideal solution would be to an array of conformance packs or something similar.

### Describe alternatives you've considered

Extended the template to add extra params and then passing those params.

For example:
- pConformancePackName
- pConformancePackNameGDPR
etc.

### Additional context

None

Start by locating the SRA examples' CloudFormation StackSet deployment path and the existing conformance-pack parameters; the issue names no files or tests. Define how an array of conformance packs should be passed, then verify that multiple packs deploy successfully using the same StackSet.

Written by the indexing model from the issue text.