Add mima excludes.

SparkHadoopUtil is not documented as a public class in Spark's API
docs, so just added new exclusions.

Author: Marcelo Vanzin

project/MimaExcludes.scala

@@ -36,6 +36,12 @@ object MimaExcludes {
 
   // Exclude rules for 2.3.x
   lazy val v23excludes = v22excludes ++ Seq(
+    // SPARK-22372: Make cluster submission use SparkApplication.
+    ProblemFilters.exclude[DirectMissingMethodProblem]("org.apache.spark.deploy.SparkHadoopUtil.getSecretKeyFromUserCredentials"),
+    ProblemFilters.exclude[DirectMissingMethodProblem]("org.apache.spark.deploy.SparkHadoopUtil.isYarnMode"),
+    ProblemFilters.exclude[DirectMissingMethodProblem]("org.apache.spark.deploy.SparkHadoopUtil.getCurrentUserCredentials"),
+    ProblemFilters.exclude[DirectMissingMethodProblem]("org.apache.spark.deploy.SparkHadoopUtil.addSecretKeyToUserCredentials"),
+
     // SPARK-18085: Better History Server scalability for many / large applications
     ProblemFilters.exclude[IncompatibleResultTypeProblem]("org.apache.spark.status.api.v1.ExecutorSummary.executorLogs"),
     // [SPARK-20495][SQL] Add StorageLevel to cacheTable API