Created README files for CHO, FUNC, and SCPF tests

Change-Id: I03dac9d76ea0a7eb3007a289325eb9bd954c759d
diff --git a/TestON/tests/SAMPstartTemplate/README b/TestON/tests/SAMPstartTemplate/README
new file mode 100644
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+Summary:
+        This is a Sample test suite that demonstrates starting up ONOS
+        and scalling to multiple instances. It also has extra
+        functionalilty that allows the tester to bypass the ONOS
+        package and install case (case 2) to save time.