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Multiple go-routines may simultaneously check for a clusterID's presence in clusterAdditionalInfo and create an entry if it is absent. This set of operation needs to be serialized. Therefore, this commit safeguards clusterAdditionalInfo map from concurrent writes with a mutex to prevent the above problem. Signed-off-by: Rakshith R <rar@redhat.com> (cherry picked from commit 82f1323af48512b4201b2ca973ac9063eb24b8bf)