PBCKP-91: delete "\r" in windows command output.

Author: funny-falcon

Diff for: tests/helpers/ptrack_helpers.py

@@ -982,7 +982,8 @@ def run_pb(self, command, asynchronous=False, gdb=False, old_binary=False, retur
                 else:
                     return self.output
         except subprocess.CalledProcessError as e:
-            raise ProbackupException(e.output.decode('utf-8'), self.cmd)
+            raise ProbackupException(e.output.decode('utf-8').replace("\r",""),
+                                     self.cmd)
 
     def run_binary(self, command, asynchronous=False, env=None):