Investigate requirements around the keywords properties file

[starksm64]

There is a src/com/sun/ts/lib/harness/keyword.properties that looks to funtion somewhat like Junit5 Tags, but applies to a package level. In the com.sun.ts.lib.harness classes, it looks like the only place this is really used is in the com.sun.ts.lib.harness.TSTestFinder which is extends a JavaTest class, so it does not look like the keywords passed to the EETest and ServiceEETest entry points actually affect which tests are run unless JavaTest is being used.

The issue would be to create Junit5 Tag entries at the test class level in the event that we want to use the keyword filtering capability.

[starksm64]

One subtask left is to update the keywords to use tag names consistent with other specs. Jakarta Data uses:

@tag("persistence")
@tag("core")
@tag("web")
@tag("platform")
@tag("signature")