Regenerate manifests for the gce and gce-rhui image types with the
rewritten definitions:
- remove unnecessary RPMs in the build root
artifact
- some stages changed order, but the pipelines be functionally
equivalent
Regenerate all manifests that used the old chrony stage options with the
'timeservers' field. This is now replaced by the 'servers' field, which
is a slice of objects with a 'hostname' field instead of a slice of
strings.
Having the GPG check enabled for Google repos in `gce*` images will make
DNF try to import the relevant keys when upgrading, downgrading or
installing any packages from the repo. However due to Google still using
SHA-1 for GPG keys used to sign their RPMs, importing it will make any
transaction that includes such RPM to fail.
Disabling the GPG check will ensure that DNF won't attempt to import
Google GPG keys.
Related to https://issuetracker.google.com/issues/223626963
The repo is not needed any more, because the Google Cloud SDK is not
installed in the images by default. If anyone wants to install the SDK,
they can add the appropriate repo definition.
The Google SDK ships pre-compiled binaries. It is undesirable to install
it by default in `gce` and `gce-rhui` in its current shape. Also not
installing it does not anyhow affect the RHEL integration as the guest
OS in GCP.
