RFR: 7903318: Make -report:executed the default

[Daniel Jeliński]

On Tue, 20 Sep 2022 09:59:35 GMT, Daniel Jeliński <djelinski at openjdk.org> wrote:

> Please review this change to the default value of `reportMode` property.
> 
> The proposed report mode produces a report on the selected tests only; it is very fast to execute, and usually completes under a second.
> The current default mode produces a report on all tests in the same test suite. It requires scanning all directories and source files in the test suite, requires a long time to produce, and usually produces the same results when jtreg is invoked from make.
> 
> If this change is integrated, the old report mode will be available under command line option `-report:all-executed`

Closing in favor of [JDK-8294142](https://bugs.openjdk.org/browse/JDK-8294142) and [CODETOOLS-7903323](https://bugs.openjdk.org/browse/CODETOOLS-7903323)

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PR: https://git.openjdk.org/jtreg/pull/123