Allow to set plugin_properties

This patch allows to configure plugin properties for
throttleconcurrent build plugin.

Change-Id: Id188c1796ba877df5216b6d686250aee604030f2
Related-Prod: PROD-16928
diff --git a/README.rst b/README.rst
index e45c4b8..ec59304 100644
--- a/README.rst
+++ b/README.rst
@@ -448,7 +448,7 @@
 
 .. code-block:: yaml
 
-    
+
     jenkins:
       client:
         plugin:
@@ -458,6 +458,27 @@
             enabled: false
             restart: true
 
+Adding plugin params to job
+
+.. code-block:: yaml
+
+
+    jenkins:
+      client:
+        job:
+          my_plugin_parametrized_job:
+            plugin_properties:
+              throttleconcurrents:
+                enabled: True
+                max_concurrent_per_node: 3
+                max_concurrent_total: 5
+        plugin:
+          swarm:
+            restart: false
+          hipchat:
+            enabled: false
+            restart: true
+
 LDAP configuration (depends on LDAP plugin)
 
 .. code-block:: yaml
@@ -551,7 +572,7 @@
 Credentials enforcing from client
 
 .. code-block:: yaml
-    
+
     jenkins:
       client:
         credential:
@@ -612,7 +633,7 @@
             ret_strategy: Always
             labels:
               - example
-              - label 
+              - label
             launcher:
                type: ssh
                host: test-launcher