Unable to find mapped JDK in AdoptOpenJDK Docker images after mid-October

Starting in mid October (around Oct 14th), we see issues running java executable from a mapped drive using the 'nightly' images produced at the project and pushed to Docker hub. This was previously not an issue.

Suspect that something changed in the Docker images as test material and mapped JDK is unchanged when issue is present (so this may get shifted to openjdk-docker repo after additional investigation).

Running Tomee tests using the JDK from within the AdoptOpenJDK Docker image,
https://ci.adoptopenjdk.net/job/Grinder/4315/console you can see that the tests execute and run:

```
09:19:13 /home/jenkins/workspace/Grinder/openjdk-tests/TKG/../external/external.sh --clean --tag nightly --version 8 --impl openj9 --dir tomee; } 2>&1 | tee -a "/home/jenkins/workspace/Grinder/openjdk-tests/TKG/../TKG/test_output_16037183519158/TestTargetResult";
09:19:13 docker run --rm --rm adoptopenjdk-tomee-test:8-jdk-ubuntu-openj9-full
09:19:13 Using docker image default Java
09:19:13 JAVA_BIN is: /opt/java/openjdk/bin
09:19:13 APPLICATION_NAME=tomee
09:19:13 APPLICATION_TAG=tomee-8.0.2
09:19:13 OS_TAG=ubuntu
09:19:13 =JAVA VERSION OUTPUT BEGIN=
09:19:13 openjdk version "1.8.0_272"
09:19:13 OpenJDK Runtime Environment (build 1.8.0_272-202010231739-b10)
09:19:13 Eclipse OpenJ9 VM (build master-67af03f58, JRE 1.8.0 Linux s390x-64-Bit Compressed References 20201023_805 (JIT enabled, AOT enabled)
09:19:13 OpenJ9 - 67af03f58
09:19:13 OMR - cb68c30b7
09:19:13 JCL - bea7d86207 based on jdk8u272-b10)
09:19:13 =JAVA VERSION OUTPUT END=
09:19:13 Build TomEE without running test
09:19:14 [INFO] Scanning for projects...
09:19:14 [INFO] Downloading from apache: https://repository.apache.org/content/repositories/releases/org/apache/apache/21/apache-21.pom
...
...
10:02:12 [INFO] ------------------------------------------------------------------------
10:02:12 [INFO] Reactor Summary for TomEE :: TCK :: MicroProfile 8.0.2:
10:02:12 [INFO]
10:02:12 [INFO] TomEE :: TCK :: MicroProfile ....................... SUCCESS [ 0.375 s]
10:02:12 [INFO] TomEE :: TCK :: MicroProfile Config TCK ............ SUCCESS [01:38 min]
10:02:12 [INFO] TomEE :: TCK :: MicroProfile JWT TCK ............... SUCCESS [01:17 min]
10:02:12 [INFO] TomEE :: TCK :: MicroProfile Fault Tolerance TCK ... SUCCESS [08:59 min]
10:02:12 [INFO] TomEE :: TCK :: MicroProfile Health TCK ............ SUCCESS [ 49.368 s]
10:02:12 [INFO] TomEE :: TCK :: MicroProfile Metrics TCK ........... SUCCESS [06:13 min]
10:02:12 [INFO] TomEE :: TCK :: MicroProfile Rest Client TCK ....... SUCCESS [06:54 min]
10:02:12 [INFO] TomEE :: TCK :: MicroProfile Open API TCK .......... SUCCESS [01:56 min]
10:02:12 [INFO] TomEE :: TCK :: MicroProfile Open Tracing TCK ...... SUCCESS [ 40.002 s]
10:02:12 [INFO] ------------------------------------------------------------------------
10:02:12 [INFO] BUILD SUCCESS
10:02:12 [INFO] ------------------------------------------------------------------------
```

Running same Tomee tests with mapped drive to nightly JDK build, [Grinder 4314](https://ci.adoptopenjdk.net/job/Grinder/4314/), unable to determine mapped JDK (JAVA VERSION OUTPUT is empty).

```
09:18:46 /home/jenkins/workspace/Grinder/openjdk-tests/TKG/../external/external.sh --clean --tag nightly --version 8 --impl openj9 --dir tomee; } 2>&1 | tee -a "/home/jenkins/workspace/Grinder/openjdk-tests/TKG/../TKG/test_output_16037183262603/TestTargetResult";
09:18:46 docker run --rm -v /home/jenkins/workspace/Grinder/openjdkbinary/j2sdk-image:/opt/java/openjdk --rm adoptopenjdk-tomee-test:8-jdk-ubuntu-openj9-full
09:18:47 Using docker image default Java
09:18:47 JAVA_BIN is: /opt/java/openjdk/bin
09:18:47 APPLICATION_NAME=tomee
09:18:47 APPLICATION_TAG=tomee-8.0.2
09:18:47 OS_TAG=ubuntu
09:18:47 =JAVA VERSION OUTPUT BEGIN=
09:18:47 =JAVA VERSION OUTPUT END=
09:18:47 Build TomEE without running test
09:18:47
09:18:47 tomee_test_j9_0_FAILED
09:18:47
```

Details in https://github.com/AdoptOpenJDK/openjdk-tests/issues/2031

https://github.com/AdoptOpenJDK/openjdk-tests/issues/2031#issuecomment-719949546