fix(stress_thread): stop assuming current path

cause code assumed HDR to be located on `$HOME`, in some situations
like in the intergation tests of c-s, it wasn't finding it and failing
like the following:

```
FAILED unit_tests/test_cassandra_stress_thread.py::test_01_cassandra_stress -
       invoke.exceptions.UnexpectedExit: Encountered a bad command exit code!

Command: 'cp cs-hdr-write-l1-c0-k1-4bf4051d-abc0-4c0d-840d-f0af5c6b6e8a.hdr
          /home/ubuntu/scylla-cluster-tests/unit_tests/
          cs-hdr-write-l1-c0-k1-4bf4051d-abc0-4c0d-840d-f0af5c6b6e8a.hdr'
Exit code: 1

Stdout:

Stderr:

cp: cannot stat 'cs-hdr-write-l1-c0-k1-4bf4051d-abc0-4c0d-840d-f0af5c6b6e8a.hdr': No such file or directory
```

(cherry picked from commit da6e8bb)

sdcm/stress_thread.py

@@ -98,9 +98,12 @@ def validate_and_collect_hdr_file(self):
         if not result.ok:
             HDRFileMissed(message=f"'{self._remote_log_file}' HDR file was not created on the loader {self._node.name}",
                           severity=Severity.ERROR).publish()
-
-        LOGGER.debug("The '%s' file found on the loader %s", self._remote_log_file, self._node.name)
-        self._node.remoter.receive_files(src=self._remote_log_file, dst=self._target_log_file)
+        try:
+            LOGGER.debug("The '%s' file found on the loader %s", self._remote_log_file, self._node.name)
+            self._node.remoter.receive_files(src=self._remote_log_file, dst=self._target_log_file)
+        except Exception:  # noqa: BLE001
+            HDRFileMissed(message=f"'{self._remote_log_file}' HDR file couldn't copied from loader {self._node.name}",
+                          severity=Severity.ERROR).publish()
 
     def __enter__(self):
         self.start()
@@ -287,14 +290,17 @@ def _run_cs_stress(self, loader, loader_idx, cpu_idx, keyspace_idx):  # pylint:
         local_hdr_file_name = os.path.join(loader.logdir, remote_hdr_file_name)
         LOGGER.debug("cassandra-stress HDR local file %s", local_hdr_file_name)
 
+        remote_hdr_file_name_full_path = remote_hdr_file_name
         if "k8s" in self.params.get("cluster_backend"):
             cmd_runner = loader.remoter
             cmd_runner_name = loader.remoter.pod_name
         elif self.params.get("use_prepared_loaders"):
             cmd_runner = loader.remoter
             cmd_runner_name = loader.ip_address
         else:
-            loader.remoter.run(f"touch $HOME/{remote_hdr_file_name}", ignore_status=True, verbose=False)
+            loader.remoter.run(f"touch $HOME/{remote_hdr_file_name}", ignore_status=False, verbose=False)
+            remote_hdr_file_name_full_path = loader.remoter.run(
+                f"realpath $HOME/{remote_hdr_file_name}", ignore_status=False, verbose=False).stdout.strip()
             cmd_runner_name = loader.ip_address
 
             cpu_options = ""
@@ -306,7 +312,7 @@ def _run_cs_stress(self, loader, loader_idx, cpu_idx, keyspace_idx):  # pylint:
                                                         f'--label shell_marker={self.shell_marker}'
                                                         f' --entrypoint /bin/bash'
                                                         f' -w /'
-                                                        f' -v $HOME/{remote_hdr_file_name}:/{remote_hdr_file_name}')
+                                                        f' -v {remote_hdr_file_name_full_path}:/{remote_hdr_file_name}')
 
         stress_cmd = self.create_stress_cmd(cmd_runner, keyspace_idx, loader)
         if self.params.get('cs_debug'):
@@ -337,7 +343,7 @@ def _run_cs_stress(self, loader, loader_idx, cpu_idx, keyspace_idx):  # pylint:
             stress_cmd = self._add_hdr_log_option(stress_cmd, remote_hdr_file_name)
             hdr_logger_context = CSHDRFileLogger(
                 node=loader,
-                remote_log_file=remote_hdr_file_name,
+                remote_log_file=remote_hdr_file_name_full_path,
                 target_log_file=os.path.join(loader.logdir, remote_hdr_file_name),
             )
         else: