Erasing passwords from topo files
diff --git a/TestON/tests/CassandraCheck/CassandraCheck.topo b/TestON/tests/CassandraCheck/CassandraCheck.topo
index 41e5854..db65096 100644
--- a/TestON/tests/CassandraCheck/CassandraCheck.topo
+++ b/TestON/tests/CassandraCheck/CassandraCheck.topo
@@ -4,56 +4,56 @@
         <ONOS1>
             <host>10.128.4.11</host>
             <user>admin</user>
-            <password>onos_test</password>
+            <password></password>
             <type>OnosCliDriver</type>
             <connect_order>4</connect_order>
         </ONOS1>
         <ONOS2>
             <host>10.128.4.12</host>
             <user>admin</user>
-            <password>onos_test</password>
+            <password></password>
             <type>OnosCliDriver</type>
             <connect_order>5</connect_order>
         </ONOS2>
         <ONOS3>
             <host>10.128.4.13</host>
             <user>admin</user>
-            <password>onos_test</password>
+            <password></password>
             <type>OnosCliDriver</type>
             <connect_order>6</connect_order>
         </ONOS3>
         <ONOS4>
             <host>10.128.4.14</host>
             <user>admin</user>
-            <password>onos_test</password>
+            <password></password>
             <type>OnosCliDriver</type>
             <connect_order>7</connect_order>
         </ONOS4>
         <ONOS5>
             <host>10.128.4.15</host>
             <user>admin</user>
-            <password>onos_test</password>
+            <password></password>
             <type>OnosCliDriver</type>
             <connect_order>8</connect_order>
         </ONOS5>
         <ONOS6>
             <host>10.128.4.16</host>
             <user>admin</user>
-            <password>onos_test</password>
+            <password></password>
             <type>OnosCliDriver</type>
             <connect_order>9</connect_order>
         </ONOS6>
         <ONOS7>
             <host>10.128.4.17</host>
             <user>admin</user>
-            <password>onos_test</password>
+            <password></password>
             <type>OnosCliDriver</type>
             <connect_order>10</connect_order>
         </ONOS7>
         <ONOS8>
             <host>10.128.4.18</host>
             <user>admin</user>
-            <password>onos_test</password>
+            <password></password>
             <type>OnosCliDriver</type>
             <connect_order>11</connect_order>
         </ONOS8>
@@ -62,7 +62,7 @@
         <Zookeeper1>
             <host>10.128.4.11</host>
             <user>admin</user>
-            <password>onos_test</password>
+            <password></password>
             <type>ZookeeperCliDriver</type>
             <connect_order>2</connect_order>
             <COMPONENTS>
@@ -72,7 +72,7 @@
         <Cassandra1>
             <host>10.128.4.11</host>
             <user>admin</user>
-            <password>onos_test</password>
+            <password></password>
             <type>CassandraCliDriver</type>
             <connect_order>3</connect_order>
             <COMPONENTS>
@@ -82,49 +82,49 @@
         <Mininet2>
             <host>10.128.6.2</host>
             <user>miniuser</user>
-            <password>onos_test</password>
+            <password></password>
             <type>RemoteMininetDriver</type>
             <connect_order>4</connect_order>
         </Mininet2>
         <Mininet3>
             <host>10.128.6.3</host>
             <user>miniuser</user>
-            <password>onos_test</password>
+            <password></password>
             <type>RemoteMininetDriver</type>
             <connect_order>4</connect_order>
         </Mininet3>
         <Mininet4>
             <host>10.128.6.4</host>
             <user>miniuser</user>
-            <password>onos_test</password>
+            <password></password>
             <type>RemoteMininetDriver</type>
             <connect_order>4</connect_order>
         </Mininet4>
         <Mininet5>
             <host>10.128.6.5</host>
             <user>miniuser</user>
-            <password>onos_test</password>
+            <password></password>
             <type>RemoteMininetDriver</type>
             <connect_order>4</connect_order>
         </Mininet5>
         <Mininet6>
             <host>10.128.6.6</host>
             <user>miniuser</user>
-            <password>onos_test</password>
+            <password></password>
             <type>RemoteMininetDriver</type>
             <connect_order>4</connect_order>
         </Mininet6>
         <Mininet7>
             <host>10.128.6.7</host>
             <user>miniuser</user>
-            <password>onos_test</password>
+            <password></password>
             <type>RemoteMininetDriver</type>
             <connect_order>4</connect_order>
         </Mininet7>
         <Mininet8>
             <host>10.128.6.8</host>
             <user>miniuser</user>
-            <password>onos_test</password>
+            <password></password>
             <type>RemoteMininetDriver</type>
             <connect_order>4</connect_order>
         </Mininet8>