graalvm java -version doesn't make much sense for Mandrel

[zakkak]

Mandrel's java is essentially the vanilla OpenJDK java, so printing it's version doesn't make much sense. Printing native-image --version would make more sense. This relates to quarkusio/quarkus#16131 so it is probably worth waiting till quarkusio/quarkus#16131 is resolved before committing to a fix.

export GRAALVM_HOME=/opt/jvms/mandrel-java11-21.0.0.0.Final
jbang buginfo@quarkusio

gives:

┌─────────────────────┬────────────────────────────────────────────────────────┐
│uname -a             │Linux         5.10.20-200.fc33.x86_64 #1 SMP Thu Mar 4  │
│                     │13:18:27 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux        │
├─────────────────────┼────────────────────────────────────────────────────────┤
│java -version        │openjdk version "11.0.10" 2021-01-19                    │
│                     │OpenJDK Runtime Environment 18.9 (build 11.0.10+9)      │
│                     │OpenJDK 64-Bit Server VM 18.9 (build 11.0.10+9, mixed   │
│                     │mode, sharing)                                          │
├─────────────────────┼────────────────────────────────────────────────────────┤
│graalvm java -version│openjdk version "11.0.10" 2021-01-19                    │
│                     │OpenJDK Runtime Environment 18.9 (build 11.0.10+9)      │
│                     │OpenJDK 64-Bit Server VM 18.9 (build 11.0.10+9, mixed   │
│                     │mode)                                                   │
└─────────────────────┴────────────────────────────────────────────────────────┘

Additional context:

$GRAALVM_HOME/bin/native-image --version
GraalVM Version 21.0.0.0.Final (Mandrel Distribution) (Java Version 11.0.10+9)

$GRAALVM_HOME/bin/java --version
openjdk 11.0.10 2021-01-19
OpenJDK Runtime Environment 18.9 (build 11.0.10+9)
OpenJDK 64-Bit Server VM 18.9 (build 11.0.10+9, mixed mode)