(cherry picked from commit d6c8398)
(cherry picked from commit 4a47d5491e9ad682a8ee2769f262f014ebcd1cb5)

Added list_dfs_services to endpoints/cluster.py's ApiCluster, to match API addition in OPSAPS-31495.

Testing:
- new unit test
- verified with manual test against CM via a simple test script:

---

    from cm_api.api_client import ApiResource

    api=ApiResource("nightly-1.vpc.cloudera.com", username="foo", password="bar")
    cluster=api.get_cluster("Cluster 1")
    apiList=cluster.list_dfs_services(view="export")
    print ("%s" %(apiList))
---

(cherry picked from commit adef14d)
(cherry picked from commit e40c6259f119cc9067db9d03b092ad0e72ac5f14)

in the exported template

Added cardinality attribute to host template in cluster template

(cherry picked from commit 0c8595d)
(cherry picked from commit 5fd588f77b0300c2bc25e6ebf508f66e338d1f22)

(cherry picked from commit e6bc828)
(cherry picked from commit 44c479034092ff51c6f206f4101a156b086f7757)

- Fixed the api
(cherry picked from commit 2151df0)

(cherry picked from commit 47531a5d9c4670aac1c8089d4c76774ec5c5e73a)

Nothing special. It's been MIA for a while.

>>> from cm_api.api_client import ApiResource
>>> api=ApiResource("nightly-1.gce.cloudera.com", username="admin", password="admin")
>>> cluster=api.get_cluster("Cluster 1")
>>> cmd = cluster.pools_refresh()

(cherry picked from commit c385539)
(cherry picked from commit 3b6cb12bb0ff730d14bf847d3b4c2f96a4c39d17)

Since it's actually been around for a while.

(cherry picked from commit ff09be8)
(cherry picked from commit 8846594073fe12823afb3ef17757dd8cc823debd)