[SPARK-2778] [yarn] Add workaround for race in MiniYARNCluster.

Sometimes the cluster's start() method returns before the configuration
having been updated, which is done by ClientRMService in, I assume, a
separate thread (otherwise there would be no race). That can cause tests
to fail if the old configuration data is read, since it will contain
the wrong RM address.

Author: Marcelo Vanzin <vanzin@cloudera.com>

Closes #2605 from vanzin/SPARK-2778 and squashes the following commits:

8d02ce0 [Marcelo Vanzin] Minor cleanup.
5bebee7 [Marcelo Vanzin] [SPARK-2778] [yarn] Add workaround for race in MiniYARNCluster.
[SPARK-3007][SQL] Adds dynamic partitioning support

PR #2226 was reverted because it broke Jenkins builds for unknown reason. This debugging PR aims to fix the Jenkins build.

This PR also fixes two bugs:

1. Compression configurations in `InsertIntoHiveTable` are disabled by mistake

   The `FileSinkDesc` object passed to the writer container doesn't have compression related configurations. These configurations are not taken care of until `saveAsHiveFile` is called. This PR moves compression code forward, right after instantiation of the `FileSinkDesc` object.

1. `PreInsertionCasts` doesn't take table partitions into account

   In `castChildOutput`, `table.attributes` only contains non-partition columns, thus for partitioned table `childOutputDataTypes` never equals to `tableOutputDataTypes`. This results funny analyzed plan like this:

   ```
   == Analyzed Logical Plan ==
   InsertIntoTable Map(partcol1 -> None, partcol2 -> None), false
    MetastoreRelation default, dynamic_part_table, None
    Project [c_0#1164,c_1#1165,c_2#1166]
     Project [c_0#1164,c_1#1165,c_2#1166]
      Project [c_0#1164,c_1#1165,c_2#1166]
       ... (repeats 99 times) ...
        Project [c_0#1164,c_1#1165,c_2#1166]
         Project [c_0#1164,c_1#1165,c_2#1166]
          Project [1 AS c_0#1164,1 AS c_1#1165,1 AS c_2#1166]
           Filter (key#1170 = 150)
            MetastoreRelation default, src, None
   ```

   Awful though this logical plan looks, it's harmless because all projects will be eliminated by optimizer. Guess that's why this issue hasn't been caught before.

Author: Cheng Lian <lian.cs.zju@gmail.com>
Author: baishuo(白硕) <vc_java@hotmail.com>
Author: baishuo <vc_java@hotmail.com>

Closes #2616 from liancheng/dp-fix and squashes the following commits:

21935b6 [Cheng Lian] Adds back deleted trailing space
f471c4b [Cheng Lian] PreInsertionCasts should take table partitions into account
a132c80 [Cheng Lian] Fixes output compression
9c6eb2d [Cheng Lian] Adds tests to verify dynamic partitioning folder layout
0eed349 [Cheng Lian] Addresses @yhuai's comments
26632c3 [Cheng Lian] Adds more tests
9227181 [Cheng Lian] Minor refactoring
c47470e [Cheng Lian] Refactors InsertIntoHiveTable to a Command
6fb16d7 [Cheng Lian] Fixes typo in test name, regenerated golden answer files
d53daa5 [Cheng Lian] Refactors dynamic partitioning support
b821611 [baishuo] pass check style
997c990 [baishuo] use HiveConf.DEFAULTPARTITIONNAME to replace hive.exec.default.partition.name
761ecf2 [baishuo] modify according micheal's advice
207c6ac [baishuo] modify for some bad indentation
caea6fb [baishuo] modify code to pass scala style checks
b660e74 [baishuo] delete a empty else branch
cd822f0 [baishuo] do a little modify
8e7268c [baishuo] update file after test
3f91665 [baishuo(白硕)] Update Cast.scala
8ad173c [baishuo(白硕)] Update InsertIntoHiveTable.scala
051ba91 [baishuo(白硕)] Update Cast.scala
d452eb3 [baishuo(白硕)] Update HiveQuerySuite.scala
37c603b [baishuo(白硕)] Update InsertIntoHiveTable.scala
98cfb1f [baishuo(白硕)] Update HiveCompatibilitySuite.scala
6af73f4 [baishuo(白硕)] Update InsertIntoHiveTable.scala
adf02f1 [baishuo(白硕)] Update InsertIntoHiveTable.scala
1867e23 [baishuo(白硕)] Update SparkHadoopWriter.scala
6bb5880 [baishuo(白硕)] Update HiveQl.scala