Bump up clair version to v2.1.2 (#11675)
Bump up clair version to v2.1.2 (#11675)

Clair v2.1.2 has been released to fix the RHEL updater issue.
https://github.com/quay/clair/releases/tag/v2.1.2

Signed-off-by: wang yan <63b20dea16c07a874bc9bf767df5575676113cb6@vmware.com>
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