Fix num_cpu LSF integration test

Contained three bugs:
* Missing -l
* int vs string comparison for num_cpu
* stdout from bhist has line breaks and whitespace indentation at random places

tests/integration_tests/scheduler/test_lsf_driver.py

@@ -183,13 +183,17 @@ async def test_submit_with_num_cpu(pytestconfig, job_name):
 
     process = await asyncio.create_subprocess_exec(
         "bhist",
+        "-l",
         job_id,
         stdout=asyncio.subprocess.PIPE,
         stderr=asyncio.subprocess.PIPE,
     )
-    stdout, _ = await process.communicate()
-    matches = re.search(".*([0-9]+) Processors Requested", stdout.decode())
-    assert matches and matches[1] == num_cpu
+    stdout, stderr = await process.communicate()
+    stdout_no_whitespaces = re.sub(r"\s+", "", stdout.decode())
+    matches = re.search(r".*([0-9]+)ProcessorsRequested.*", stdout_no_whitespaces)
+    assert matches and matches[1] == str(
+        num_cpu
+    ), f"Could not verify processor allocation from stdout: {stdout}, stderr: {stderr}"
 
     assert Path("test").read_text(encoding="utf-8") == "test\n"