util/util-app: Lint file(s) prior to making changes

JIRA Issues: KUBE-3034

Differential Revision: https://phabricator.twitter.biz/D1268019

Author: shatil

util-app/src/main/scala/com/twitter/app/Flaggable.scala

@@ -1,18 +1,21 @@
 package com.twitter.app
 
-import com.twitter.util.{Duration, StorageUnit, Time, TimeFormat}
+import com.twitter.util.Duration
+import com.twitter.util.StorageUnit
+import com.twitter.util.Time
+import com.twitter.util.TimeFormat
 import java.io.File
 import java.lang.reflect.Type
-import java.lang.{
-  Boolean => JBoolean,
-  Double => JDouble,
-  Float => JFloat,
-  Integer => JInteger,
-  Long => JLong
-}
+import java.lang.{Boolean => JBoolean}
+import java.lang.{Double => JDouble}
+import java.lang.{Float => JFloat}
+import java.lang.{Integer => JInteger}
+import java.lang.{Long => JLong}
 import java.net.InetSocketAddress
 import java.time.LocalTime
-import java.util.{List => JList, Map => JMap, Set => JSet}
+import java.util.{List => JList}
+import java.util.{Map => JMap}
+import java.util.{Set => JSet}
 import scala.jdk.CollectionConverters._
 import scala.reflect.ClassTag