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/ApplicationCommand.java b/cli/src/main/java/org/onosproject/cli/app/ApplicationCommand.java
index 51bb9db..c9d8f08 100644
--- a/cli/src/main/java/org/onosproject/cli/app/ApplicationCommand.java
+++ b/cli/src/main/java/org/onosproject/cli/app/ApplicationCommand.java
@@ -70,7 +70,7 @@
     // Installs the application from input of the specified URL
     private boolean installApp(ApplicationAdminService service, String url) {
         try {
-            if (url.equals("-")) {
+            if ("-".equals(url)) {
                 service.install(System.in);
             } else {
                 service.install(new URL(url).openStream());