HADOOP-19784- ABFS: Update Unit Test for Client Header Changes

[manika137]

Description of PR

JIRA: https://issues.apache.org/jira/browse/HADOOP-19784
We have a unit test (testFNSEndptConvertedIndicatorInHeader) that validates the presence of a specific indicator within a field in the client request header. Recent changes to the client header structure have altered the expected index/position of this indicator, causing the test to fail.
This change updates the test to reflect the revised header format and corrects the assertion accordingly.

How was this patch tested?

Test suite result added in comment below

[manika137]

============================================================
HNS-OAuth-DFS

[WARNING] Tests run: 239, Failures: 0, Errors: 0, Skipped: 2
[WARNING] Tests run: 908, Failures: 0, Errors: 0, Skipped: 222
[WARNING] Tests run: 158, Failures: 0, Errors: 0, Skipped: 8
[WARNING] Tests run: 271, Failures: 0, Errors: 0, Skipped: 23

============================================================
HNS-SharedKey-DFS

[WARNING] Tests run: 239, Failures: 0, Errors: 0, Skipped: 3
[WARNING] Tests run: 911, Failures: 0, Errors: 0, Skipped: 168
[WARNING] Tests run: 158, Failures: 0, Errors: 0, Skipped: 8
[WARNING] Tests run: 271, Failures: 0, Errors: 0, Skipped: 10

============================================================
AppendBlob-HNS-OAuth-DFS

[WARNING] Tests run: 239, Failures: 0, Errors: 0, Skipped: 2
[WARNING] Tests run: 908, Failures: 0, Errors: 0, Skipped: 233
[WARNING] Tests run: 135, Failures: 0, Errors: 0, Skipped: 9
[WARNING] Tests run: 271, Failures: 0, Errors: 0, Skipped: 23

============================================================
NonHNS-SharedKey-Blob

[WARNING] Tests run: 239, Failures: 0, Errors: 0, Skipped: 9
[WARNING] Tests run: 758, Failures: 0, Errors: 0, Skipped: 155
[WARNING] Tests run: 158, Failures: 0, Errors: 0, Skipped: 3
[WARNING] Tests run: 271, Failures: 0, Errors: 0, Skipped: 11

============================================================
NonHNS-OAuth-Blob

[WARNING] Tests run: 239, Failures: 0, Errors: 0, Skipped: 9
[WARNING] Tests run: 755, Failures: 0, Errors: 0, Skipped: 156
[WARNING] Tests run: 158, Failures: 0, Errors: 0, Skipped: 3
[WARNING] Tests run: 271, Failures: 0, Errors: 0, Skipped: 24

============================================================
AppendBlob-NonHNS-OAuth-Blob

[WARNING] Tests run: 239, Failures: 0, Errors: 0, Skipped: 9
[WARNING] Tests run: 750, Failures: 0, Errors: 0, Skipped: 202
[WARNING] Tests run: 135, Failures: 0, Errors: 0, Skipped: 4
[WARNING] Tests run: 271, Failures: 0, Errors: 0, Skipped: 24

============================================================
HNS-Oauth-DFS-IngressBlob

[WARNING] Tests run: 239, Failures: 0, Errors: 0, Skipped: 2
[WARNING] Tests run: 782, Failures: 0, Errors: 0, Skipped: 231
[WARNING] Tests run: 158, Failures: 0, Errors: 0, Skipped: 8
[WARNING] Tests run: 271, Failures: 0, Errors: 0, Skipped: 23

[hadoop-yetus]

💔 -1 overall

Vote	Subsystem	Runtime	Logfile	Comment
+0 🆗	reexec	17m 35s		Docker mode activated.
			_ Prechecks _
+1 💚	dupname	0m 0s		No case conflicting files found.
+0 🆗	codespell	0m 0s		codespell was not available.
+0 🆗	detsecrets	0m 0s		detect-secrets 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.
			_ trunk Compile Tests _
+1 💚	mvninstall	35m 14s		trunk passed
+1 💚	compile	0m 45s		trunk passed with JDK Ubuntu-21.0.7+6-Ubuntu-0ubuntu120.04
+1 💚	compile	0m 46s		trunk passed with JDK Ubuntu-17.0.15+6-Ubuntu-0ubuntu120.04
+1 💚	checkstyle	0m 35s		trunk passed
+1 💚	mvnsite	0m 50s		trunk passed
-1 ❌	javadoc	0m 45s	/branch-javadoc-hadoop-tools_hadoop-azure-jdkUbuntu-21.0.7+6-Ubuntu-0ubuntu120.04.txt	hadoop-azure in trunk failed with JDK Ubuntu-21.0.7+6-Ubuntu-0ubuntu120.04.
-1 ❌	javadoc	0m 40s	/branch-javadoc-hadoop-tools_hadoop-azure-jdkUbuntu-17.0.15+6-Ubuntu-0ubuntu120.04.txt	hadoop-azure in trunk failed with JDK Ubuntu-17.0.15+6-Ubuntu-0ubuntu120.04.
-1 ❌	spotbugs	1m 21s	/branch-spotbugs-hadoop-tools_hadoop-azure-warnings.html	hadoop-tools/hadoop-azure in trunk has 1 extant spotbugs warnings.
+1 💚	shadedclient	27m 15s		branch has no errors when building and testing our client artifacts.
			_ Patch Compile Tests _
+1 💚	mvninstall	0m 37s		the patch passed
+1 💚	compile	0m 38s		the patch passed with JDK Ubuntu-21.0.7+6-Ubuntu-0ubuntu120.04
+1 💚	javac	0m 38s		the patch passed
+1 💚	compile	0m 40s		the patch passed with JDK Ubuntu-17.0.15+6-Ubuntu-0ubuntu120.04
+1 💚	javac	0m 40s		the patch passed
+1 💚	blanks	0m 0s		The patch has no blanks issues.
+1 💚	checkstyle	0m 23s		the patch passed
+1 💚	mvnsite	0m 42s		the patch passed
-1 ❌	javadoc	0m 32s	/patch-javadoc-hadoop-tools_hadoop-azure-jdkUbuntu-21.0.7+6-Ubuntu-0ubuntu120.04.txt	hadoop-azure in the patch failed with JDK Ubuntu-21.0.7+6-Ubuntu-0ubuntu120.04.
-1 ❌	javadoc	0m 32s	/patch-javadoc-hadoop-tools_hadoop-azure-jdkUbuntu-17.0.15+6-Ubuntu-0ubuntu120.04.txt	hadoop-azure in the patch failed with JDK Ubuntu-17.0.15+6-Ubuntu-0ubuntu120.04.
+1 💚	spotbugs	1m 31s		the patch passed
+1 💚	shadedclient	28m 5s		patch has no errors when building and testing our client artifacts.
			_ Other Tests _
+1 💚	unit	3m 12s		hadoop-azure in the patch passed.
+1 💚	asflicense	0m 34s		The patch does not generate ASF License warnings.
		124m 41s

Subsystem	Report/Notes
Docker	ClientAPI=1.52 ServerAPI=1.52 base: https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-8181/1/artifact/out/Dockerfile
GITHUB PR	#8181
JIRA Issue	HADOOP-19784
Optional Tests	dupname asflicense compile javac javadoc mvninstall mvnsite unit shadedclient spotbugs checkstyle codespell detsecrets
uname	Linux bf010a322899 5.15.0-164-generic #174-Ubuntu SMP Fri Nov 14 20:25:16 UTC 2025 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	dev-support/bin/hadoop.sh
git revision	trunk / 6dbee26
Default Java	Ubuntu-17.0.15+6-Ubuntu-0ubuntu120.04
Multi-JDK versions	/usr/lib/jvm/java-21-openjdk-amd64:Ubuntu-21.0.7+6-Ubuntu-0ubuntu120.04 /usr/lib/jvm/java-17-openjdk-amd64:Ubuntu-17.0.15+6-Ubuntu-0ubuntu120.04
Test Results	https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-8181/1/testReport/
Max. process+thread count	722 (vs. ulimit of 5500)
modules	C: hadoop-tools/hadoop-azure U: hadoop-tools/hadoop-azure
Console output	https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-8181/1/console
versions	git=2.25.1 maven=3.9.11 spotbugs=4.9.7
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[manika137]

Javadoc errors and Spotbugs are not from the changes in the PR