Change in Enum of ApiClusterVersion, break ECS cluster creation

[clevesque]

CM API v49 (CM7.6.5), & CM API v45 (CM7.5.5) there has been a change in ApiClusterVersion data type.
(Enum: CDH3, CDH3u4X, CDH4, CDH5, CDH6, CDH7, DATA_SERVICES1, UNKNOWN )

Previously, this had an element called EXPERIENCE1
The new value is DATA_SERVICES1

A template in cloudera.cluster references the old value, which breaks in CM7.6.5: & 7.5.5
https://github.com/cloudera-labs/cloudera.cluster/blob/devel/roles/deployment/cluster/templates/cluster_template/ecs/clusters.j2

[wmudge]

Updated in #107