HADOOP-16409. Allow authoritative mode on non-qualified paths.

[mackrorysd]

This addresses whitespace nits from Gabor's review of #1043, and allows non-qualified paths to be specified in the config.

[hadoop-yetus]

🎊 +1 overall

Vote	Subsystem	Runtime	Comment
0	reexec	31	Docker mode activated.
		_ Prechecks _
+1	dupname	0	No case conflicting files found.
+1	@author	0	The patch does not contain any @author tags.
+1	test4tests	0	The patch appears to include 1 new or modified test files.
		_ trunk Compile Tests _
+1	mvninstall	1085	trunk passed
+1	compile	30	trunk passed
+1	checkstyle	23	trunk passed
+1	mvnsite	41	trunk passed
+1	shadedclient	684	branch has no errors when building and testing our client artifacts.
+1	javadoc	28	trunk passed
0	spotbugs	58	Used deprecated FindBugs config; considering switching to SpotBugs.
+1	findbugs	55	trunk passed
		_ Patch Compile Tests _
+1	mvninstall	31	the patch passed
+1	compile	27	the patch passed
+1	javac	27	the patch passed
-0	checkstyle	16	hadoop-tools/hadoop-aws: The patch generated 1 new + 40 unchanged - 0 fixed = 41 total (was 40)
+1	mvnsite	32	the patch passed
+1	whitespace	0	The patch has no whitespace issues.
+1	shadedclient	707	patch has no errors when building and testing our client artifacts.
+1	javadoc	20	the patch passed
+1	findbugs	56	the patch passed
		_ Other Tests _
+1	unit	285	hadoop-aws in the patch passed.
+1	asflicense	27	The patch does not generate ASF License warnings.
		3267

Subsystem	Report/Notes
Docker	Client=17.05.0-ce Server=17.05.0-ce base: https://builds.apache.org/job/hadoop-multibranch/job/PR-1054/1/artifact/out/Dockerfile
GITHUB PR	#1054
Optional Tests	dupname asflicense compile javac javadoc mvninstall mvnsite unit shadedclient findbugs checkstyle
uname	Linux fff5b7977c40 4.4.0-138-generic #164-Ubuntu SMP Tue Oct 2 17:16:02 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	personality/hadoop.sh
git revision	trunk / 8965ddc
Default Java	1.8.0_212
checkstyle	https://builds.apache.org/job/hadoop-multibranch/job/PR-1054/1/artifact/out/diff-checkstyle-hadoop-tools_hadoop-aws.txt
Test Results	https://builds.apache.org/job/hadoop-multibranch/job/PR-1054/1/testReport/
Max. process+thread count	414 (vs. ulimit of 5500)
modules	C: hadoop-tools/hadoop-aws U: hadoop-tools/hadoop-aws
Console output	https://builds.apache.org/job/hadoop-multibranch/job/PR-1054/1/console
versions	git=2.7.4 maven=3.3.9 findbugs=3.1.0-RC1
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[bgaborg]

just 3 nits with newlines, otherwise ok. will commit after those are cleared and I ran all the tests.

[bgaborg]

Test result against ireland: 4 known testMRJob failures, no others.
+1 on this.