ENH: add function that generates passwords

Summary

Function that can create passwords for administrative uses.

Test Environment

Manual testing

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• All automated tests pass
• Reference related Issues
• Up-to-date CHANGELOG.md
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• Annotations in code (Gitlab comments)
  • Intent of new code
  • Problems with old code
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Check List for the Reviewer

• I understand the intent of this MR
• All automated tests pass
• Up-to-date CHANGELOG.md
• The test environment setup works and the intended behavior is reproducible in the test environment
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src/caosdb/common/administration.py

@@ -111,7 +111,7 @@ def get_server_property(key):
     return get_server_properties()[key]
 
 
-def get_password(length: int):
+def generate_password(length: int):
     """ creates a random password that fulfills the security requirements """
     sample_letters = string.ascii_letters + string.digits + "!#$%*+-/:;?_"
     password = ''.join((random.choice(sample_letters) for i in range(length)))