[PE-42706]: Add support for installing Puppet agent on Solaris 10 SPARC hosts

[span786]

What's this PR do?

This PR introduces support for installing the solaris-10-sparc Puppet agent directly via agent-downloads. This approach is necessary because the build is not part of a standard release and was created for a specific customer. These changes allow us to validate the solaris-10-sparc Puppet agent with PE releases without publishing it to the general agent distribution locations.
Changes in this PR are similar to this PR #264 which was done for SLES 11 (x86_64) platform

Should any of this be tested outside the normal PR CI cycle?

No

[joshcooper]

LGTM though it seems some of the checks are still failling. Not sure if those are broken and it's ok to merge? Thoughts @steveax

[span786]

LGTM though it seems some of the checks are still failling. Not sure if those are broken and it's ok to merge? Thoughts @steveax

The acceptance tests are failing because the system cannot download the puppet-agent due to the absence of a valid license. Below is the error snippet:

15:09:00 Last 10 lines of output were:
15:09:00 	No provider of 'puppet-agent=8.15.0.65.gd2a4b575d' found.
15:09:00 	+ '[' 104 -ne 0 ']'
15:09:00 	+ echo 'Failed to install puppet-agent. Please check that you have a PE license. Aborting...'
15:09:00 	Failed to install puppet-agent. Please check that you have a PE license. Aborting...
15:09:00 	+ exit 1
15:09:00 	+ remove_repo
15:09:00 	+ zypper rr puppet-enterprise
15:09:00 	Removing repository 'puppet-enterprise' [...done]
15:09:00 	Repository 'puppet-enterprise' has been removed.
15:09:00 	Error running install script /tmp/tmp.ruMXYdHTDz

[steveax]

We should fix those tests by augmenting them with a license step, but seems like time is of the essence here so 👍

[steveax]

Opened PE-42803 to cover fixing those tests (they've been broken since February 2025.)