Revert "HADOOP-17563. Update Bouncy Castle to 1.68. (#2740)"

[tasanuma]

This reverts commit 0774116.

JIRA: HADOOP-17563

[jojochuang]

+1 pending Jenkins.

[hadoop-yetus]

💔 -1 overall

Vote	Subsystem	Runtime	Logfile	Comment
+0 🆗	reexec	1m 15s		Docker mode activated.
			_ Prechecks _
+1 💚	dupname	0m 0s		No case conflicting files found.
+0 🆗	codespell	0m 0s		codespell was not available.
+0 🆗	shelldocs	0m 0s		Shelldocs was not available.
+1 💚	@author	0m 0s		The patch does not contain any @author tags.
-1 ❌	test4tests	0m 0s		The patch doesn't appear to include any new or modified tests. Please justify why no new tests are needed for this patch. Also please list what manual steps were performed to verify this patch.
			_ trunk Compile Tests _
+0 🆗	mvndep	14m 47s		Maven dependency ordering for branch
+1 💚	mvninstall	21m 29s		trunk passed
+1 💚	compile	20m 58s		trunk passed with JDK Ubuntu-11.0.10+9-Ubuntu-0ubuntu1.20.04
+1 💚	compile	18m 14s		trunk passed with JDK Private Build-1.8.0_282-8u282-b08-0ubuntu1~20.04-b08
+1 💚	mvnsite	25m 54s		trunk passed
+1 💚	javadoc	7m 43s		trunk passed with JDK Ubuntu-11.0.10+9-Ubuntu-0ubuntu1.20.04
+1 💚	javadoc	7m 46s		trunk passed with JDK Private Build-1.8.0_282-8u282-b08-0ubuntu1~20.04-b08
+1 💚	shadedclient	32m 45s		branch has no errors when building and testing our client artifacts.
			_ Patch Compile Tests _
+0 🆗	mvndep	0m 34s		Maven dependency ordering for patch
+1 💚	mvninstall	26m 36s		the patch passed
+1 💚	compile	28m 18s		the patch passed with JDK Ubuntu-11.0.10+9-Ubuntu-0ubuntu1.20.04
+1 💚	javac	28m 18s		the patch passed
+1 💚	compile	23m 37s		the patch passed with JDK Private Build-1.8.0_282-8u282-b08-0ubuntu1~20.04-b08
+1 💚	javac	23m 37s		the patch passed
+1 💚	blanks	0m 0s		The patch has no blanks issues.
+1 💚	mvnsite	26m 26s		the patch passed
+1 💚	shellcheck	0m 0s		No new issues.
+1 💚	xml	0m 1s		The patch has no ill-formed XML file.
+1 💚	javadoc	9m 45s		the patch passed with JDK Ubuntu-11.0.10+9-Ubuntu-0ubuntu1.20.04
+1 💚	javadoc	9m 27s		the patch passed with JDK Private Build-1.8.0_282-8u282-b08-0ubuntu1~20.04-b08
+1 💚	shadedclient	33m 54s		patch has no errors when building and testing our client artifacts.
			_ Other Tests _
-1 ❌	unit	221m 30s	/patch-unit-root.txt	root in the patch failed.
+0 🆗	asflicense	0m 35s		ASF License check generated no output?
		499m 51s

Reason	Tests
Failed junit tests	hadoop.hdfs.server.balancer.TestBalancer
	hadoop.hdfs.server.namenode.TestReconstructStripedBlocks
	hadoop.hdfs.server.namenode.TestNamenodeRetryCache
	hadoop.hdfs.TestRollingUpgrade
	hadoop.hdfs.server.namenode.TestNameNodeMXBean
	hadoop.hdfs.server.balancer.TestBalancerRPCDelay
	hadoop.hdfs.server.namenode.TestFSEditLogLoader
	hadoop.hdfs.server.namenode.TestAddStripedBlocks
	hadoop.hdfs.server.namenode.ha.TestRetryCacheWithHA
	hadoop.hdfs.server.namenode.TestDecommissioningStatusWithBackoffMonitor

Subsystem	Report/Notes
Docker	ClientAPI=1.41 ServerAPI=1.41 base: https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-3055/1/artifact/out/Dockerfile
GITHUB PR	#3055
Optional Tests	dupname asflicense compile javac javadoc mvninstall mvnsite unit shadedclient codespell xml shellcheck shelldocs
uname	Linux 4fde28dc7a6f 4.15.0-58-generic #64-Ubuntu SMP Tue Aug 6 11:12:41 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	dev-support/bin/hadoop.sh
git revision	trunk / ae93d72
Default Java	Private Build-1.8.0_282-8u282-b08-0ubuntu1~20.04-b08
Multi-JDK versions	/usr/lib/jvm/java-11-openjdk-amd64:Ubuntu-11.0.10+9-Ubuntu-0ubuntu1.20.04 /usr/lib/jvm/java-8-openjdk-amd64:Private Build-1.8.0_282-8u282-b08-0ubuntu1~20.04-b08
Test Results	https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-3055/1/testReport/
Max. process+thread count	3379 (vs. ulimit of 5500)
modules	C: hadoop-project . U: .
Console output	https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-3055/1/console
versions	git=2.25.1 maven=3.6.3 shellcheck=0.7.0
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[tasanuma]

Thanks for your reviews, @jojochuang and @aajisaka. I confirmed that the failed tests are passed on my local computer. I will merge it.