TEZ-4347: Add some diagnostic endpoints to TezAM's WebUIService

[abstractdog]

Add some diagnostic endpoints to TezAM's WebUIService

• add new endpoints to webuiservice
• make port range configurable
• publish the web endpoint through dag client
• unit test included: TestAM
• checked in browser too

[abstractdog]

could you please review this @jteagles , @zjffdu? a medium size patch for adding new features to tez am web ui service

[tez-yetus]

🎊 +1 overall

Vote	Subsystem	Runtime	Comment
+0 🆗	reexec	16m 29s	Docker mode activated.
		_ Prechecks _
+1 💚	dupname	0m 0s	No case conflicting files found.
+0 🆗	prototool	0m 0s	prototool was not available.
+1 💚	@author	0m 0s	The patch does not contain any @author tags.
+1 💚	test4tests	0m 0s	The patch appears to include 1 new or modified test files.
		_ master Compile Tests _
+0 🆗	mvndep	5m 5s	Maven dependency ordering for branch
+1 💚	mvninstall	9m 48s	master passed
+1 💚	compile	2m 31s	master passed with JDK Ubuntu-11.0.14+9-Ubuntu-0ubuntu2.20.04
+1 💚	compile	2m 17s	master passed with JDK Private Build-1.8.0_312-8u312-b07-0ubuntu1~20.04-b07
+1 💚	checkstyle	2m 5s	master passed
+1 💚	javadoc	2m 27s	master passed with JDK Ubuntu-11.0.14+9-Ubuntu-0ubuntu2.20.04
+1 💚	javadoc	2m 7s	master passed with JDK Private Build-1.8.0_312-8u312-b07-0ubuntu1~20.04-b07
+0 🆗	spotbugs	0m 43s	Used deprecated FindBugs config; considering switching to SpotBugs.
+1 💚	findbugs	4m 39s	master passed
		_ Patch Compile Tests _
+0 🆗	mvndep	0m 9s	Maven dependency ordering for patch
+1 💚	mvninstall	1m 39s	the patch passed
+1 💚	compile	1m 48s	the patch passed with JDK Ubuntu-11.0.14+9-Ubuntu-0ubuntu2.20.04
+1 💚	cc	1m 48s	the patch passed
+1 💚	javac	1m 48s	the patch passed
+1 💚	compile	1m 35s	the patch passed with JDK Private Build-1.8.0_312-8u312-b07-0ubuntu1~20.04-b07
+1 💚	cc	1m 35s	the patch passed
+1 💚	javac	1m 35s	the patch passed
-0 ⚠️	checkstyle	0m 8s	tez-common: The patch generated 1 new + 0 unchanged - 0 fixed = 1 total (was 0)
+1 💚	whitespace	0m 0s	The patch has no whitespace issues.
+1 💚	javadoc	1m 30s	the patch passed with JDK Ubuntu-11.0.14+9-Ubuntu-0ubuntu2.20.04
+1 💚	javadoc	1m 23s	the patch passed with JDK Private Build-1.8.0_312-8u312-b07-0ubuntu1~20.04-b07
+1 💚	findbugs	4m 14s	the patch passed
		_ Other Tests _
+1 💚	unit	2m 1s	tez-api in the patch passed.
+1 💚	unit	0m 24s	tez-common in the patch passed.
+1 💚	unit	1m 12s	tez-mapreduce in the patch passed.
+1 💚	unit	4m 16s	tez-dag in the patch passed.
+1 💚	unit	38m 56s	tez-tests in the patch passed.
+1 💚	asflicense	0m 58s	The patch does not generate ASF License warnings.
		110m 22s

Subsystem	Report/Notes
Docker	ClientAPI=1.41 ServerAPI=1.41 base: https://ci-hadoop.apache.org/job/tez-multibranch/job/PR-160/10/artifact/out/Dockerfile
GITHUB PR	#160
JIRA Issue	TEZ-4347
Optional Tests	dupname asflicense javac javadoc unit spotbugs findbugs checkstyle compile cc prototool
uname	Linux 0f5a1586d607 4.15.0-163-generic #171-Ubuntu SMP Fri Nov 5 11:55:11 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	personality/tez.sh
git revision	master / f724c54
Default Java	Private Build-1.8.0_312-8u312-b07-0ubuntu1~20.04-b07
Multi-JDK versions	/usr/lib/jvm/java-11-openjdk-amd64:Ubuntu-11.0.14+9-Ubuntu-0ubuntu2.20.04 /usr/lib/jvm/java-8-openjdk-amd64:Private Build-1.8.0_312-8u312-b07-0ubuntu1~20.04-b07
checkstyle	https://ci-hadoop.apache.org/job/tez-multibranch/job/PR-160/10/artifact/out/diff-checkstyle-tez-common.txt
Test Results	https://ci-hadoop.apache.org/job/tez-multibranch/job/PR-160/10/testReport/
Max. process+thread count	1214 (vs. ulimit of 5500)
modules	C: tez-api tez-common tez-mapreduce tez-dag tez-tests U: .
Console output	https://ci-hadoop.apache.org/job/tez-multibranch/job/PR-160/10/console
versions	git=2.25.1 maven=3.6.3 findbugs=3.0.1
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[abstractdog]

please review this @rbalamohan , @jteagles, thanks in advance!
tested locally, we would like this patch to be the base of further improvements like TEZ-4038, so we're kind of blocked here

[rbalamohan]

LGTM. +1. This can serve as the base for adding "/prof" endpoint in AM later.