add todo

Signed-off-by: Javan Lacerda <javanlacerda@google.com>

Author: javanlacerda

src/clusterfuzz/_internal/k8s/service.py

@@ -37,6 +37,7 @@
 
 # See https://cloud.google.com/batch/quotas#job_limits
 MAX_CONCURRENT_VMS_PER_JOB = 1000
+# TODO(javanlacerda): Use feature flag for setting it.
 CLUSTER_NAME = 'clusterfuzz-cronjobs-gke'
 
 KubernetesJobConfig = collections.namedtuple('KubernetesJobConfig', [