bad-str-strip-call errors in pylint
### Description

Pylint found 3 occurrences of E1310 bad-str-strip-call in the codebase.

### Steps to reproduce

1. run donkeyrider with `-d centos7 -s syntax --build`
2. examine output of `running pylint`

### Rucio Version

_No response_

### Additional Information

_No response_
diff --git a/lib/rucio/rse/protocols/rclone.py b/lib/rucio/rse/protocols/rclone.py
index de49dfe2f..9e0a21b3e 100644
--- a/lib/rucio/rse/protocols/rclone.py
+++ b/lib/rucio/rse/protocols/rclone.py
@@ -195,7 +195,7 @@ class Default(protocol.RSEProtocol):
 
             if status_query == 0:
                 chsum = 'md5'
-                val = out.strip('  ').split()
+                val = out.strip(' ').split()
                 ret[chsum] = val[0]
 
         except Exception as e:
diff --git a/lib/rucio/rse/protocols/ssh.py b/lib/rucio/rse/protocols/ssh.py
index 9b45e3c25..82d92792a 100644
--- a/lib/rucio/rse/protocols/ssh.py
+++ b/lib/rucio/rse/protocols/ssh.py
@@ -110,7 +110,7 @@ class Default(protocol.RSEProtocol):
 
             if status_query == 0:
                 chsum = 'md5'
-                val = out.strip('  ').split()
+                val = out.strip(' ').split()
                 ret[chsum] = val[0]
 
         except Exception as e:
@@ -324,7 +324,7 @@ class Rsync(Default):
 
             if status_query == 0:
                 chsum = 'md5'
-                val = out.strip('  ').split()
+                val = out.strip(' ').split()
                 ret[chsum] = val[0]
 
         except Exception as e:
['lib/rucio/rse/protocols/ssh.py', 'lib/rucio/rse/protocols/rclone.py']