RFR: 1627: Add tests for bot factories [v5]

[Zhao Song]

On Mon, 17 Oct 2022 23:09:41 GMT, Zhao Song <zsong at openjdk.org> wrote:

>> Add some tests for BotFactories.
>
> Zhao Song has refreshed the contents of this pull request, and previous commits have been removed. The incremental views will show differences compared to the previous content of the PR. The pull request contains one new commit since the last revision:
> 
>   Added more tests in botFactory tests

test/src/main/java/org/openjdk/skara/test/TestHostedRepository.java line 73:

> 71:      * Creates an instance without a backing local repository that will not support any actual repository interaction
> 72:      */
> 73:     public TestHostedRepository(TestHost host, String projectName) {

Still need this constructor because in a test, we need a `TestHostedRepository` with `TestHost`

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PR: https://git.openjdk.org/skara/pull/1393