Address comments from code review

    - Removed all grep_str's from onosclidriver
    - fix some sendline issues
    - refactor HA tests a bit
    - fix typos
diff --git a/TestON/drivers/common/clidriver.py b/TestON/drivers/common/clidriver.py
index e54c663..7bf7667 100644
--- a/TestON/drivers/common/clidriver.py
+++ b/TestON/drivers/common/clidriver.py
@@ -76,7 +76,7 @@
 	    elif i==6:
 	        main.log.info("Password not required logged in")
 
-        self.handle.sendline("\n")
+        self.handle.sendline("")
         self.handle.expect('>|#|\$')
         return self.handle