Ensure InstallVersion() is case insensitive

[anamnavi]

Ensure package name used by Install for ACR, is made lowercase as ACR can only contains lower cased names for artifacts but the user should be able to provide any casing.

Also update Find, Install and Publish tests for ACR to use newly published (with new names) test packages. These will have resourceType populated in manifest.

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• [ ] Summarized changes
• [ ] Make sure all .h, .cpp, .cs, .ps1 and .psm1 files have the correct copyright header
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  • [ ] [Documentation needed]()
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