Google repositories use RSA/SHA1 for signing packages. However the SHA1
has been disabled by default on el9/c9s. Since osbuild-composer imports
GPG keys specified in the repository definition unconditionally, this
creates issues when installing rpms signed with the key by osbuild [1].
Remove GPG keys in all el9/c9s GCP repo definitions and disable GPG
signature verification until [2] is resolved.
[1] https://github.com/osbuild/osbuild/issues/991
[2] https://issuetracker.google.com/issues/223626963
Signed-off-by: Tomas Hozza <thozza@redhat.com>
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