Support host wildcards in Shell app

[msquee]

This PR adds support for using wildcards such as *.ten.osc.edu in the SSH allowlist. Closes #599

Example:
Set ENV variable OOD_SSHHOST_ALLOWLIST to owens.osc.edu:*.ten.osc.edu then you can SSH into any host that matches *.ten.osc.edu from the Shell app without adding every FQDN manually.

• Adds two helper functions: hostInAllowList() and generateWildcardGlob()
• Includes tests for both helper functions
• Tests have 100% code coverage

You can run tests with code coverage tests with command yarn jest --verbose --coverage or run test suites with yarn test

[msquee]

We really should start moving functions into a utilities module so we can write tests. The current architecture of the Shell app doesn't make tests easy. I'll talk with @samirmansour and @matthu017 offline so everyone is on the same page about it.

[ericfranz]

Discussed on Slack simpler solution that can be backed by tests.

[johrstrom]

This looks ready to me. As a follow up, because this adds tests, we need enable those tests in our rake tasks.