Update Image Signature policy

• The signature parameter key/values changed upstream. Updated the default values/test-values to align with the latest format.
• Added IronBank signature checking to test-values (we want to know if this doesn't work in our testing)
• Turned on the signature policy in test-values so it would be checked
• Turned off digest verification and mutation for IronBank (we don't want the tag converted to a SHA since IronBank rebuilds images nightly)
• Added test vector to cover non-signed, non-verified image since IronBank images are signed/verified now.

Related to #22 (closed)

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assigned to @michaelmcleroy

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• 3b06971b - chore: bump chart and docs

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• 4cba7219 - fix: update parameters for signature policy according to upstream docs

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• 3c5f51ba - test(signature): add IB signature to test-values

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• a5101497 - docs: update changelog

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• a1f77c7d - test: check for kyverno bug

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• d43cefbf - test(signatures): turn off digest mutation

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• 0cb6025d - test(signature): turn off digest verification

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marked this merge request as ready

mentioned in issue #22 (closed)

changed title from Fixing Helm Test for Require Image Signature policy to Update Image Signature policy

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• 6a201ced - test(image-signature): added test case

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• 9ac44ce1 - test(signature): fix typo in test name

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merged

mentioned in commit 4e9d2c52