Use snapshot_pid function instead of snapshot_one in tests

[mpozniak95]

Description

Functions snapshot_one_profile and snapshot_one_collapse are replaced by snapshot_pid_profile and snapshot_one_collapse in test_java.py and test_sanity.py tests.

Related Issue

#514

Motivation and Context

How Has This Been Tested?

Run test_java and test_sanity

Screenshots

Checklist:

• I have read the CONTRIBUTING document.
• I have updated the relevant documentation.
• I have added tests for new logic.

[Jongy]

CI failure seems like somethign was broken in our dependencies and a freshly installed flake8 doesn't run - https://github.com/Granulate/gprofiler/actions/runs/3197282546/jobs/5220663090

We probably need to downgrade the version of flake8 or another library. @mpozniak95 you can check it out, otherwise I will reach it later today.

[Jongy]

@mpozniak95 you can merge from master, I solved the flake8 issue.

[mpozniak95]

Merged from master

[Jongy]

Flaky failure:

E       [2022-10-07 08:28:01,861] ERROR: gprofiler.profilers.profiler_base: JavaProfiler: failed to profile process 7 (java)
E       Traceback (most recent call last):
E         File "granulate_utils/linux/ns.py", line 248, in _switch_and_run
E         File "gprofiler/profilers/java.py", line 230, in _run_java_version
E         File "gprofiler/utils/__init__.py", line 249, in run_process
E         File "gprofiler/utils/__init__.py", line 197, in _reap_process
E         File "subprocess.py", line 863, in communicate
E         File "subprocess.py", line 1525, in _communicate
E         File "selectors.py", line 351, in register
E         File "selectors.py", line 237, in register
E         File "selectors.py", line 224, in _fileobj_lookup
E         File "selectors.py", line 39, in _fileobj_to_fd
E       ValueError: Invalid file object: <_io.BufferedReader name=11>

Merging this :)