RFR: 8210: Update devguide to mention Protocol Rules for Eclipse 2023-06 onward [v2]

[Marcus Hirt]

On Wed, 13 Mar 2024 14:52:40 GMT, Alex Macdonald <aptmac at openjdk.org> wrote:

>> This PR adds some information to the devguide about using Eclipse 2023-06 and above. Newer Eclipse IDEs force the use of HTTPS for external update sites and artifacts, which out of the box conflicts with our local p2 repository.
>> 
>> The fix is to allow http in Preferences > Install/Update > Trust > Authorities > Protocol Rules. I've added a screenshot to doc as well highlighting where to find it. 
>> 
>> I had run into this yesterday when taking a look at some interesting behaviour I was seeing when testing the Jolokia PR https://github.com/openjdk/jmc/pull/548#issuecomment-1989331436.
>
> Alex Macdonald has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains two commits:
> 
>  - Move the mention of the Preferences setting to be alongside the eclipse.ini method
>  - 8210: Update devguide to mention Protocol Rules for Eclipse 2023-06 onward

Marked as reviewed by hirt (Lead).

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PR Review: https://git.openjdk.org/jmc/pull/556#pullrequestreview-1935241607