HDDS-2157. checkstyle: print filenames relative to project root

[adoroszlai]

What changes were proposed in this pull request?

Remove project root from filenames in checkstyle.sh output. Also, make script slightly more readable by breaking long sed command.

https://issues.apache.org/jira/browse/HDDS-2157

How was this patch tested?

Introduced some checkstyle errors, then ran check:

$ git revert --no-commit 126ef77a810
$ hadoop-ozone/dev-support/checks/checkstyle.sh
...
hadoop-hdds/common/src/main/java/org/apache/hadoop/hdds/utils/db/cache/TableCache.java
 88: Line is longer than 80 characters (found 91).
hadoop-hdds/common/src/main/java/org/apache/hadoop/hdds/utils/RocksDBStoreIterator.java
 29: Line is longer than 80 characters (found 90).
 46: Line is longer than 80 characters (found 105).
hadoop-hdds/common/src/main/java/org/apache/hadoop/hdds/utils/LevelDBStoreIterator.java
 28: Line is longer than 80 characters (found 90).
hadoop-hdds/common/src/test/java/org/apache/hadoop/hdds/utils/TestMetadataStore.java
 124: Line is longer than 80 characters (found 87).
hadoop-hdds/container-service/src/main/java/org/apache/hadoop/ozone/container/common/transport/server/ratis/ContainerStateMachine.java
 451: '}' at column 11 should be alone on a line.
hadoop-hdds/client/src/main/java/org/apache/hadoop/hdds/scm/client/HddsClientUtils.java
 136: Line is longer than 80 characters (found 89).
 144: Line is longer than 80 characters (found 81).
 154: Line is longer than 80 characters (found 99).
...

[adoroszlai]

/label ozone

[hadoop-yetus]

💔 -1 overall

Vote	Subsystem	Runtime	Comment
0	reexec	105	Docker mode activated.
		_ Prechecks _
+1	dupname	0	No case conflicting files found.
0	shelldocs	0	Shelldocs was not available.
+1	@author	0	The patch does not contain any @author tags.
-1	test4tests	0	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 _
-1	mvninstall	34	hadoop-ozone in trunk failed.
+1	mvnsite	0	trunk passed
-1	shadedclient	35	branch has errors when building and testing our client artifacts.
		_ Patch Compile Tests _
-1	mvninstall	32	hadoop-ozone in the patch failed.
+1	mvnsite	0	the patch passed
+1	shellcheck	0	There were no new shellcheck issues.
+1	whitespace	0	The patch has no whitespace issues.
-1	shadedclient	28	patch has errors when building and testing our client artifacts.
		_ Other Tests _
+1	unit	57	hadoop-hdds in the patch passed.
-1	unit	25	hadoop-ozone in the patch failed.
+1	asflicense	30	The patch does not generate ASF License warnings.
		659

Subsystem	Report/Notes
Docker	Client=18.09.7 Server=18.09.7 base: https://builds.apache.org/job/hadoop-multibranch/job/PR-1485/1/artifact/out/Dockerfile
GITHUB PR	#1485
Optional Tests	dupname asflicense mvnsite unit shellcheck shelldocs
uname	Linux feb834285bcb 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	personality/hadoop.sh
git revision	trunk / 3f223be
mvninstall	https://builds.apache.org/job/hadoop-multibranch/job/PR-1485/1/artifact/out/branch-mvninstall-hadoop-ozone.txt
mvninstall	https://builds.apache.org/job/hadoop-multibranch/job/PR-1485/1/artifact/out/patch-mvninstall-hadoop-ozone.txt
unit	https://builds.apache.org/job/hadoop-multibranch/job/PR-1485/1/artifact/out/patch-unit-hadoop-ozone.txt
Test Results	https://builds.apache.org/job/hadoop-multibranch/job/PR-1485/1/testReport/
Max. process+thread count	50 (vs. ulimit of 5500)
modules	C: hadoop-ozone U: hadoop-ozone
Console output	https://builds.apache.org/job/hadoop-multibranch/job/PR-1485/1/console
versions	git=2.7.4 maven=3.3.9 shellcheck=0.4.6
Powered by	Apache Yetus 0.10.0 http://yetus.apache.org

This message was automatically generated.

[adoroszlai]

Thanks @anuengineer for merging it.