Temporary files not removed

[tpazderka]

Code Version

4.7.0

Expected Behavior

Clean up the no longer necessary files.

Current Behavior

Calling entitites_descriptor leaves files on disc (2 per call).

Possible Solution

make_temp function creates the temporary files marked as for deletion and passes file descriptor to the caller. It should be possible to just close the file when no longer needed.

Steps to Reproduce

1. Call entities_descriptor to create a valid XML
2. Inspect temporary file storage

[peppelinux]

Pysaml2 uses xmlsec1 as system call and It needs a xml file. As other issues related to xmlsec1 already exposed, we're facing the Need to implement a xmlsec wrapper in pure python. This Will let us to decide if use systemcall or xmlsec lib/api for xml validation.

In pysaml2 v4.6.0 and v4.8.0 this problem ALSO exists.

[peppelinux]

Fixed in this PR
#634