Fix Sonar issue:

Strings literals should be placed on the left side when checking for
equality

Change-Id: I4537e08936731ace55aeecb3ad941269ec1eb191
diff --git a/cli/src/main/java/org/onosproject/cli/app/ApplicationNameCompleter.java b/cli/src/main/java/org/onosproject/cli/app/ApplicationNameCompleter.java
index be921cc..f8d86f1 100644
--- a/cli/src/main/java/org/onosproject/cli/app/ApplicationNameCompleter.java
+++ b/cli/src/main/java/org/onosproject/cli/app/ApplicationNameCompleter.java
@@ -63,9 +63,9 @@
 //            if (previousApps.contains(app.id().name())) {
 //                continue;
 //            }
-            if (cmd.equals("uninstall") ||
-                    (cmd.equals("activate") && state == INSTALLED) ||
-                    (cmd.equals("deactivate") && state == ACTIVE)) {
+            if ("uninstall".equals(cmd) ||
+                    ("activate".equals(cmd) && state == INSTALLED) ||
+                    ("deactivate".equals(cmd) && state == ACTIVE)) {
                 strings.add(app.id().name());
             }
         }