[Tooling update] health_checks

* Added:

- Execute zookeeper cmds via socket
- Retrieve zookeeper stats
- Retrieve zookeeper leader
- Fetch contrail vrouter list from control node
- Fetch contrail vrouter summary from control node
- Fetch contrail vrouter agent connections from compute node
- Fetch libvirt supported machine types for compute node
- compund fix for contrail check
- failed_minion output fix for netdev check

Related-Prod: PROD-29236

Change-Id: I4ad5b053609bfbb1c072d9895d47117a62e18309
diff --git a/README.rst b/README.rst
index d97a47d..55b079c 100644
--- a/README.rst
+++ b/README.rst
@@ -828,6 +828,50 @@
   salt-call health_checks.entropy_check minimum_bits=1000
 
 
+Execute zookeeper cmds via socket:
+
+.. code-block:: bash
+
+  salt -C s-ntw01* health_checks.zookeeper_cmd conf
+  salt -C s-ntw01* health_checks.zookeeper_cmd envi
+
+Retrieve zookeeper stats:
+
+.. code-block:: bash
+
+  salt -C s-ntw01* health_checks.zookeeper_stats
+
+Retrieve zookeeper leader:
+
+.. code-block:: bash
+
+  salt-call health_checks.get_zookeeper_leader
+
+Fetch contrail vrouter list from control node
+
+.. code-block:: bash
+
+  salt -C s-ntw01* health_checks.contrail_vrouter_list
+
+Fetch contrail vrouter summary from control node
+
+.. code-block:: bash
+
+  salt -C s-ntw01* health_checks.contrail_vrouter_show <vr_uuid>
+
+Fetch contrail vrouter agent connections from compute node
+
+.. code-block:: bash
+
+  salt -C cmp001* health_checks.contrail_vrouter_agent_status
+
+Fetch libvirt supported machine types for compute node
+
+.. code-block:: bash
+
+  salt -C 'I@opencontrail:compute' health_checks.libvirt_capabilities
+
+
 Encrypted pillars
 ~~~~~~~~~~~~~~~~~