fix(logcollector): fix remote collect cmd to support non-bash shells

`>&` redirecting syntax has been replaced by `> file 2>&1` to support
shells like sh. Such a shell is a default on Manager node deployed in
Cloud. That makes impossible logs collect there.

In terms of compatibility, `> file 2>&1` should behave consistently
across different systems and shells.

sdcm/logcollector.py

@@ -597,7 +597,7 @@ def create_remote_storage_dir(self, node, path=''):
     def collect_log_remotely(node, cmd: str, log_filename: str) -> Optional[str]:
         if not node.remoter:
             return None
-        collect_log_command = f"{cmd} >& '{log_filename}'"
+        collect_log_command = f"{cmd} > '{log_filename}' 2>&1"
         node.remoter.run(collect_log_command, ignore_status=True, verbose=True)
         result = node.remoter.run(f"test -f '{log_filename}'", ignore_status=True)
         return log_filename if result.ok else None