default void prepareAlterTableEnvironmentContext(AbstractAlterTableDesc alterTableDesc,
      EnvironmentContext environmentContext) {
  }
Alter table operations can rely on this to customize the EnvironmentContext to be used during the alter table
invocation (both on client and server side of HMS)
@param alterTableDesc the alter table desc (e.g.: AlterTableSetPropertiesDesc) containing the work to do
@param environmentContext an existing EnvironmentContext created prior, now to be filled/amended
ql/src/java/org/apache/hadoop/hive/ql/metadata/HiveStorageHandler.java