Refactor Comparator class to break dependency of core/net on the CLI

Change-Id: I6f3165f399ab448eff5c5d2232f4b96f10ebf57e
diff --git a/apps/routing/src/main/java/org/onosproject/routing/cli/BgpSpeakersListCommand.java b/apps/routing/src/main/java/org/onosproject/routing/cli/BgpSpeakersListCommand.java
index 064080f..e107e36 100644
--- a/apps/routing/src/main/java/org/onosproject/routing/cli/BgpSpeakersListCommand.java
+++ b/apps/routing/src/main/java/org/onosproject/routing/cli/BgpSpeakersListCommand.java
@@ -19,7 +19,7 @@
 import com.google.common.collect.Lists;
 import org.apache.karaf.shell.commands.Command;
 import org.onosproject.cli.AbstractShellCommand;
-import org.onosproject.cli.Comparators;
+import org.onosproject.utils.Comparators;
 import org.onosproject.core.ApplicationId;
 import org.onosproject.core.CoreService;
 import org.onosproject.net.config.NetworkConfigService;