HADOOP-17056. shelldoc fails in hadoop-common.

[aajisaka]

JIRA: https://issues.apache.org/jira/browse/HADOOP-17056

Skip GPG verification in the docker build image.

[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://builds.apache.org/job/hadoop-multibranch/job/PR-2045/1/console in case of problems.

[hadoop-yetus]

🎊 +1 overall

Vote	Subsystem	Runtime	Comment
+0 🆗	reexec	1m 22s	Docker mode activated.
		_ Prechecks _
+1 💚	dupname	0m 0s	No case conflicting files found.
+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	1m 16s	Maven dependency ordering for branch
+1 💚	shadedclient	16m 21s	branch has no errors when building and testing our client artifacts.
		_ Patch Compile Tests _
+0 🆗	mvndep	0m 31s	Maven dependency ordering for patch
+1 💚	hadolint	0m 5s	There were no new hadolint issues.
+1 💚	shellcheck	0m 0s	There were no new shellcheck issues.
+1 💚	whitespace	0m 0s	The patch has no whitespace issues.
+1 💚	shadedclient	15m 50s	patch has no errors when building and testing our client artifacts.
		_ Other Tests _
+1 💚	asflicense	0m 32s	The patch does not generate ASF License warnings.
		37m 48s

Subsystem	Report/Notes
Docker	ClientAPI=1.40 ServerAPI=1.40 base: https://builds.apache.org/job/hadoop-multibranch/job/PR-2045/1/artifact/out/Dockerfile
GITHUB PR	#2045
Optional Tests	dupname asflicense shellcheck shelldocs hadolint
uname	Linux 23cbe5ee7213 4.15.0-74-generic #84-Ubuntu SMP Thu Dec 19 08:06:28 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	personality/hadoop.sh
git revision	trunk / 9fe4c37
Max. process+thread count	314 (vs. ulimit of 5500)
modules	C: U:
Console output	https://builds.apache.org/job/hadoop-multibranch/job/PR-2045/1/console
versions	git=2.17.1 maven=3.6.0 shellcheck=0.4.6 hadolint=1.11.1-0-g0e692dd
Powered by	Apache Yetus 0.12.0 https://yetus.apache.org

This message was automatically generated.

[iwasakims]

Is this message in cosole output relevant?

17:33:05  WARNING: shellcheck needs UTF-8 locale support. Forcing C.UTF-8.
17:33:05  executable '/testptch/hadoop/dev-support/bin/shelldocs' for 'shelldocs' does not exist.

[aajisaka]

Thank @iwasakims for your comment.

I think this output is not related to the patch. The warning has been there since at least May.
Ref:

• Hadoop YARN/ YARN-10186 Changed README.txt to README.md for better readability #1887 (comment)
• https://builds.apache.org/job/hadoop-multibranch/job/PR-1887/1/console

We should fix it in a separate jira.

[aajisaka]

Filed https://issues.apache.org/jira/browse/HADOOP-17062 for tracking the issue.

[iwasakims]

Thanks, @aajisaka. +1.

[ayushtkn]

LGTM

[aajisaka]

Thank you @iwasakims and @ayushtkn for your review.

[aajisaka]

I found a typo after committing this.