Unhardcode console params

Allow to set console params on conductor by using the
following pillar ironic:conductor:console

Change-Id: I35d80ea63265b8ea07da933d5aa5ee3cf172cfc5
Related-Prod: PROD-26131
diff --git a/README.rst b/README.rst
index 6502a63..4d76b85 100644
--- a/README.rst
+++ b/README.rst
@@ -194,6 +194,26 @@
             strategy: ENCRYPT
             secret_key: secret
 
+
+Enable serial console for Baremetal Nodes
+-----------------------------------------
+
+.. code-block:: yaml
+
+  ironic:
+    conductor:
+      console:
+        terminal: shellinaboxd
+        terminal_cert_dir: /tmp/ca
+        terminal_timeout: 10
+        subprocess_checking_interval: 1
+        subprocess_timeout: 10
+        socat_address: 127.0.0.1
+
+You can read more info about it here:
+  https://docs.openstack.org/ironic/pike/admin/console.html#node-serial-console
+
+
 Ensure nodes are in target state (available).
 Starting from 1.11 API microversion newly-created node is moved to `enroll`
 state. To move it to available the following client pillar might be used: