Rename EXTRA_FLINK_PROPERTIES to FLINK_PROPERTIES (#25)
Rename EXTRA_FLINK_PROPERTIES to FLINK_PROPERTIES (#25)

Fix #24
GoogleCloudPlatform/flink-on-k8s-operator,GoogleCloudPlatform/flink-on-k8s-operator,GoogleCloudPlatform/flink-on-k8s-operator