Summary:
hsperfdata of java binaries can conflict because they run in bazel sandboxes which operate with pid namespaces. This means PIDs are often the same.
The /tmp files that those binaries use, however, are shared. This results in clobbering of files.

Address this with sandbox_tmpfs_path, which mounts a /tmp inside each sandbox, making each sandbox operate independently.

Test Plan: Jenkins and --runs_per_test=100

Reviewers: yzhao, zasgar, #engineering, vihang

Reviewed By: #engineering, vihang

Differential Revision: https://phab.corp.pixielabs.ai/D6834

GitOrigin-RevId: ea7cce87cb2df92c9728abb53c7a2950cb5628fe