extended.openjdk failure: javax/xml/crypto/dsig/LineFeedOnlyTest.java

javax/xml/crypto/dsig/LineFeedOnlyTest.java
https://ci.adoptopenjdk.net/job/Test_openjdk8_j9_extended.openjdk_x86-32_windows/14/consoleFull
```
12:45:18 openjdk version "1.8.0_292"
12:45:18 OpenJDK Runtime Environment (build 1.8.0_292-202103091148-b05)
12:45:18 Eclipse OpenJ9 VM (build openj9-0.26.0-m1, JRE 1.8.0 Windows Server 2012 R2 x86-32-Bit 20210309_870 (JIT enabled, AOT enabled)
12:45:18 OpenJ9 - b227feba2
12:45:18 OMR - 4665e2f72
12:45:18 JCL - 1780cbc92b based on jdk8u292-b05)
```
```
13:26:54 messages:
13:26:54 command: main -Dcom.sun.org.apache.xml.internal.security.lineFeedOnly=false LineFeedOnlyTest
13:26:54 reason: User specified action: run main/othervm/timeout=300 -Dcom.sun.org.apache.xml.internal.security.lineFeedOnly=false LineFeedOnlyTest
13:26:54 Mode: othervm [/othervm specified]
13:26:54 elapsed time (seconds): 1.523
13:26:54 configuration:
13:26:54 STDOUT:
13:26:54 * Generating signature-line-endings.xml
13:26:54 * com.sun.org.apache.xml.internal.security.lineFeedOnly is false
13:26:54 * com.sun.org.apache.xml.internal.security.ignoreLineBreaks is false
13:26:54 STDERR:
13:26:54 java.lang.Exception: Unexpected output in encoded certificate
13:26:54 at LineFeedOnlyTest.test_create_signature_line_endings(LineFeedOnlyTest.java:183)
13:26:54 at LineFeedOnlyTest.main(LineFeedOnlyTest.java:101)
13:26:54 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
13:26:54 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
13:26:54 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
13:26:54 at java.lang.reflect.Method.invoke(Method.java:498)
13:26:54 at com.sun.javatest.regtest.agent.MainWrapper$MainThread.run(MainWrapper.java:127)
13:26:54 at java.lang.Thread.run(Thread.java:823)
13:26:54
13:26:54 JavaTest Message: Test threw exception: java.lang.Exception: Unexpected output in encoded certificate
```

Start with javax/xml/crypto/dsig/LineFeedOnlyTest.java, especially test_create_signature_line_endings at line 183, and review the linked CI console output. Reproduce the command with the shown system properties on the affected OpenJDK/OpenJ9 environment. Done means the test no longer reports unexpected output in the encoded certificate.

Written by the indexing model from the issue text.