Fixes integration tests on noexec mounted directories

[Stringy]

Description

With the tests now running directly on the host, some hosts mount /tmp noexec which means we get permission denied errors when trying to run the integration tests from that location. This PR changes the location to the user's home directory to avoid the noexec constraint.

Longer term, tests should be containerized to avoid this issue altogether

Checklist

• Investigated and inspected CI test results
• Updated documentation accordingly

Automated testing

• Added unit tests
• Added integration tests
• Added regression tests

If any of these don't apply, please comment below.

Testing Performed

Tested locally against garden linux, will rely on CI to test the remainder of the platforms.

[github-actions]

Kernel	Method	Without Collector Time (secs)	With Collector Time (secs)	Baseline median (secs)	Collector median (secs)	PValue