René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Make the distribution input field optional","articleBody":"**Description:**\r\n\r\nV2 requires a `distribution` input field which brought breaking changes to v1. Make it optional, set default to `zulu`, thus for most cases, I do not need to change my Github Actions workflow config.\r\n\r\n**Task version:**\r\nv2\r\n\r\n**Platform:**\r\n- [x] Ubuntu\r\n- [ ] macOS\r\n- [ ] Windows\r\n\r\n**Runner type:**\r\n- [x] Hosted\r\n- [ ] Self-hosted\r\n\r\n**Repro steps:**  \r\n\r\nAfter upgrading to v2 in [this pr](https://github.com/hantsy/jakartaee9-starter-boilerplate/pull/110), specify the distribution to `adopt`,  the cacerts import behavior failed in Github actions.\r\nSee the log:\r\n\r\nhttps://github.com/hantsy/jakartaee9-starter-boilerplate/pull/110/checks?check_run_id=2270373502\r\n\r\nYou can review the current version(v1) used in the master branch, it works well.\r\n\r\nhttps://github.com/hantsy/jakartaee9-starter-boilerplate/blob/master/.github/workflows/it-with-arq-liberty-remote.yml\r\n","author":{"url":"https://github.com/hantsy","@type":"Person","name":"hantsy"},"datePublished":"2021-04-05T14:30:35.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":5},"url":"https://github.com/154/setup-java/issues/154"}