[SPARK-23654][BUILD] remove jets3t as a dependency of spark

[steveloughran]

What changes were proposed in this pull request?

Remove jets3t dependency, and bouncy castle which it brings in; update licenses and deps

Note this is just #22081 with merge conflict resolved; submitting to see what jenkins says.

How was this patch tested?

Existing tests on a JVM with unlimited Java Crypto Extensions

[SparkQA]

Test build #94834 has finished for PR 22117 at commit 3cad78f.

• This patch fails Spark unit tests.
• This patch merges cleanly.
• This patch adds no public classes.

[jerryshao]

Jenkins, retest this please.

[SparkQA]

Test build #94840 has finished for PR 22117 at commit 3cad78f.

• This patch fails due to an unknown error code, -9.
• This patch merges cleanly.
• This patch adds no public classes.

[xuanyuanking]

retest this please

[SparkQA]

Test build #94851 has finished for PR 22117 at commit 3cad78f.

• This patch fails Spark unit tests.
• This patch merges cleanly.
• This patch adds no public classes.

[steveloughran]

Test failure in org.apache.spark.sql.hive.client.HiveClientSuites.(It is not a test it is a sbt.testing.SuiteSelector):

Caused by: sbt.ForkMain$ForkError: java.lang.NoClassDefFoundError: javax/jdo/JDOException
	at org.apache.hadoop.hive.metastore.HiveMetaStore.newRetryingHMSHandler(HiveMetaStore.java:5501)
	at org.apache.hadoop.hive.metastore.HiveMetaStoreClient.<init>(HiveMetaStoreClient.java:184)
	at org.apache.hadoop.hive.ql.metadata.SessionHiveMetaStoreClient.<init>(SessionHiveMetaStoreClient.java:73)
	... 41 more
Caused by: sbt.ForkMain$ForkError: java.lang.ClassNotFoundException: javax.jdo.JDOException
	at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
	at org.apache.spark.sql.hive.client.IsolatedClientLoader$$anon$1.doLoadClass(IsolatedClientLoader.scala:227)
	at org.apache.spark.sql.hive.client.IsolatedClientLoader$$anon$1.loadClass(IsolatedClientLoader.scala:216)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
	... 44 more

somehow datanucleus JARs aren't on the CP for the hive test. I can't see how this patch is causing this —can anyone else? But if not: why is it surfacing here