UnixPB: Update Regex For JDK symlinking

[steelhead31]

Fixes #4294

Update the jdk install role to use more specific matching in the regex.

Checklist

• commit message has one of the standard prefixes
• playbook changes run through VPC or QPC (if you have access)

[sxa]

Any particular reason not to use .*? Or perhaps u.* for the jdk8 case. I'm not quite sure that the current version will pick it it properly but I could be mistaken.

Sample format: jdk8u482-b08

[steelhead31]

The issue with

^jdk8* - 8* means - no 8s, or one 8, or many 8s , so in actuality actually matching jdk* and ignoring the 8 element completely..

The new regex works as follows :

• "^jdk{{ jdk_version }}($|[^0-9].*)"

After jdk8, it allows either:
end of string, or
a non-digit followed by anything

In jdk8u432, the character after 8 is u, which is a non-digit, so it matches.

For version 8 it will match anything like this..

jdk8
jdk8u432
jdk8-temurin
jdk8_anything

And for other versions... it uses the 2nd regex clause

• "^jdk-{{ jdk_version }}.*"

jdk11.0.27+6
jdk17.x.x.x+x
jdk21.x.x.x+x
jdk25.x.x.x+x

As the first clause is only meant to be used for JDK8, I've simplified the regex.. Suspect I was trying to have 1 regex to handle everything.

[sxa]

LGTM now - thanks