Revert "HADOOP-17778. CI for Centos 8"

[GauthamBanasandra]

Reverts #3151

[GauthamBanasandra]

Reverting this PR till we fix the issue seen in https://issues.apache.org/jira/browse/HADOOP-17787?focusedCommentId=17373270&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#comment-17373270

@ayushtkn @goiri please review this PR.

[hadoop-yetus]

🎊 +1 overall

Vote	Subsystem	Runtime	Logfile	Comment
+0 🆗	reexec	19m 53s		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.
			_ trunk Compile Tests _
+0 🆗	mvndep	13m 31s		Maven dependency ordering for branch
+1 💚	shadedclient	19m 29s		branch has no errors when building and testing our client artifacts.
			_ Patch Compile Tests _
+0 🆗	mvndep	0m 29s		Maven dependency ordering for patch
+1 💚	blanks	0m 0s		The patch has no blanks issues.
+1 💚	hadolint	0m 2s		No new issues.
+1 💚	shellcheck	0m 0s		No new issues.
+1 💚	shadedclient	21m 58s		patch has no errors when building and testing our client artifacts.
			_ Other Tests _
+1 💚	asflicense	0m 34s		The patch does not generate ASF License warnings.
		77m 53s

Subsystem	Report/Notes
Docker	ClientAPI=1.41 ServerAPI=1.41 base: https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-3173/1/artifact/out/Dockerfile
GITHUB PR	#3173
Optional Tests	dupname asflicense codespell shellcheck shelldocs hadolint
uname	Linux 9f6a9ae637c3 4.15.0-136-generic #140-Ubuntu SMP Thu Jan 28 05:20:47 UTC 2021 x86_64 GNU/Linux
Build tool	maven
Personality	dev-support/bin/hadoop.sh
git revision	trunk / b2a8b84
Max. process+thread count	611 (vs. ulimit of 5500)
modules	C: U:
Console output	https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-3173/1/console
versions	git=2.30.2 maven=3.6.3 shellcheck=0.7.1 hadolint=1.11.1-0-g0e692dd
Powered by	Apache Yetus 0.14.0-SNAPSHOT https://yetus.apache.org

This message was automatically generated.

[hadoop-yetus]

(!) A patch to the testing environment has been detected.
Re-executing against the patched versions to perform further tests.
The console is at https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-3173/1/console in case of problems.

[hadoop-yetus]

🎊 +1 overall

Vote	Subsystem	Runtime	Logfile	Comment
+0 🆗	reexec	0m 45s		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.
			_ trunk Compile Tests _
+0 🆗	mvndep	0m 29s		Maven dependency ordering for branch
+1 💚	shadedclient	17m 30s		branch has no errors when building and testing our client artifacts.
			_ Patch Compile Tests _
+0 🆗	mvndep	0m 26s		Maven dependency ordering for patch
+1 💚	blanks	0m 0s		The patch has no blanks issues.
+1 💚	hadolint	0m 2s		No new issues.
+1 💚	shellcheck	0m 0s		No new issues.
+1 💚	shadedclient	17m 8s		patch has no errors when building and testing our client artifacts.
			_ Other Tests _
+1 💚	asflicense	0m 36s		The patch does not generate ASF License warnings.
		37m 38s

Subsystem	Report/Notes
Docker	ClientAPI=1.41 ServerAPI=1.41 base: https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-3173/1/artifact/out/Dockerfile
GITHUB PR	#3173
Optional Tests	dupname asflicense codespell hadolint shellcheck shelldocs
uname	Linux b7ecfd6695d5 4.15.0-136-generic #140-Ubuntu SMP Thu Jan 28 05:20:47 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	dev-support/bin/hadoop.sh
git revision	trunk / b2a8b84
Max. process+thread count	599 (vs. ulimit of 5500)
modules	C: U:
Console output	https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-3173/1/console
versions	git=2.25.1 maven=3.6.3 shellcheck=0.7.0 hadolint=1.11.1-0-g0e692dd
Powered by	Apache Yetus 0.14.0-SNAPSHOT https://yetus.apache.org

This message was automatically generated.

[GauthamBanasandra]

Reverting my PR won't help. Please seed https://issues.apache.org/jira/browse/HADOOP-17787?focusedCommentId=17374129&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#comment-17374129. Closing this.