ci: add tfswitchDir

[ocofaigh]

Description

add tfswitchDir to CI pipeline to determine where to get TF version to install for pipeline runtime

Release required?

• [x] No release
• [ ] Patch release (x.x.X)
• [ ] Minor release (x.X.x)
• [ ] Major release (X.x.x)

Release notes content

Run the pipeline

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Run the CI pipeline when the PR is ready for review and you expect tests to pass. Add a comment to the PR with the following text:

/run pipeline

Checklist for reviewers

• [ ] If relevant, a test for the change is included or updated with this PR.
• [ ] If relevant, documentation for the change is included or updated with this PR.

For mergers

• Use a conventional commit message to set the release level. Follow the guidelines.
• Include information that users need to know about the PR in the commit message. The commit message becomes part of the GitHub release notes.
• Use the Squash and merge option.

[ocofaigh]

/run pipeline

[ocofaigh]

/run pipeline

[ocofaigh]

This PR will need to be force merged because the change being made in this PR won't take affect until its in main branch. After that, pipeline will be unblocked.

[terraform-ibm-modules-ops]

:tada: This PR is included in version 3.0.0 :tada:

The release is available on:

• GitHub release
• v3.0.0

Your semantic-release bot :package::rocket: