perf test READMEs

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+INTENT EVENT THROUGHPUT
+
+Summary: This is a performance test suite to test the intent 
+    throughput capabilities of ONOS with various controller cluster sizes. 
+
+Pre-requisites: To run out-of-the box this test requires 7 NODES. OC1->OC7 
+    must be set before initiating the test. Passwordless login must be set 
+    from TestStation "admin" root user. 
+
+***If you wish to run this test with less than 7 nodes the following 
+    alterations must be made: 
+
+NOTE: Only scale sizes 1,3,5 and 7 will be functional
+
+--In the .params, remove any values in the comma separated list in the 
+    <scale> tag that are above your desired cluster size. 
+
+--In the .params file remove one instance of “1,2” from the <testcases> 
+    tag for each value you removed from <scale> (case 1 and 2 are each 
+    called once for each scale value)
+
+--In the .params file, change the value in the <max> tag to your desired 
+    scale size (1,3, or 5)
+
+--In the .topo file, change the <ONOSbench/COMPONENTS/nodes> tag to your 
+    desired scale size 
+
+--Also in the .topo file, you will need to remove all unneeded <ONOS X cli> 
+    tags and their contents