Set application.features via ENV variable

[Elessar8]

I'm running CMAK in kubernetes and would like to disable features (specifically cluster management) via an env variable.
Currently I have to resort to
RUN sed -i '/KMClusterManagerFeature/c\application.features=["KMTopicManagerFeature","KMPreferredReplicaElectionFeature","KMReassignPartitionsFeature","KMScheduleLeaderElectionFeature"]' conf/application.conf

since I use the default application file. Can we add a line in there similar to ZK_HOSTS and the other variables?