RFR: 1885: Add method deleteDeployKeys to HostedRepository

[Erik Joelsson]

On Wed, 19 Apr 2023 19:58:03 GMT, Zhao Song <zsong at openjdk.org> wrote:

> The method deleteDeployKeys is designed to delete deploy keys from this repository.

forge/src/main/java/org/openjdk/skara/forge/HostedRepository.java line 217:

> 215:      * The return value is the count of deleted keys
> 216:      */
> 217:     int deleteDeployKeys(int age);

Instead of using int for age, please use a [Duration](https://docs.oracle.com/javase/8/docs/api/java/time/Duration.html).

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PR Review Comment: https://git.openjdk.org/skara/pull/1505#discussion_r1171867901