Add missing core.properties dependency

[galenatjpl]

I was able to successfully build the latest validate software.

I built the full tar.gz distribution as well.
However, there seems to be a reliance on a core.properties file, that I think may have been part of the original codebase, before the refactoring.

When I run it now, I get:

$ ./validate-1.16.0-SNAPSHOT/bin/validate --report-style json -D -R pds4.bundle -c ./validate_config.txt ./insight_cameras
Exception in thread "main" java.lang.ExceptionInInitializerError
at gov.nasa.pds.validate.ValidateLauncher.(ValidateLauncher.java:218)
at gov.nasa.pds.validate.ValidateLauncher.main(ValidateLauncher.java:1085)
Caused by: java.lang.NullPointerException
at java.util.Properties$LineReader.readLine(Properties.java:434)
at java.util.Properties.load0(Properties.java:353)
at java.util.Properties.load(Properties.java:341)
at gov.nasa.pds.tools.util.VersionInfo.(VersionInfo.java:71)
... 2 more

This seems to be failing, when loading core.properties:

props.load(VersionInfo.class.getResourceAsStream("/core.properties"));

See this line:
https://github.com/NASA-PDS-Incubator/validate/blob/21c039264f1ddb22cac617c33ceb4fd822c475df/src/main/java/gov/nasa/pds/tools/util/VersionInfo.java#L70

I’m pretty sure the file it’s looking for, is this one:
https://github.jpl.nasa.gov/PDSEN/pds4-java/blob/dev/preparation/core/src/main/resources/core.properties

It’s present in the 1.15.0 distribution “core-1.15.0.jar” file:

The META-INF/MANIFEST.MF file of the 1.15 version contains core-1.15.0.jar in its classpath, but 1.16 does not.

Anyway, this dependency:

gov.nasa.pds.2010.preparation
core
${core-version}

Needs to be incorporated, but the “gov.nasa.pds.2010.preparation:core:jar” is not in the public maven repo.

So the core.properties needs to be brought in.