Automate the DataPrepperVersion from Gradle

[dlvenable]

Is your feature request related to a problem? Please describe.

When we create a new major/minor release, we have to update the CURRENT_VERSION in the DataPrepperVersion file to the new version. We do this in preparation for the next release version.

data-prepper/data-prepper-api/src/main/java/org/opensearch/dataprepper/model/configuration/DataPrepperVersion.java

Line 9 in d6465ef

private static final String CURRENT_VERSION = "2.10";

Describe the solution you'd like

This should come from the version expressed in the gradle.properties that we release from.

data-prepper/gradle.properties

Line 8 in d6465ef

version=2.10.0-SNAPSHOT

We can probably accomplish this by reading the version from a resource file. By including some new resource in the jar file, we can read that resource to determine the major/minor version. Gradle could easily produce this resource file as part of the build.

Describe alternatives you've considered (Optional)

It may be possible to have Gradle modify the compiled Java instead of using a resource file. We could investigate this as well.

Additional context
N/A