Issue 970 connect refused clean sessions

[jlamaille]

Description

Motivation and Context

Fix the problem #970

How Has This Been Tested?

I manually tested that when you launch a complete test class with a cleaning of the active sessions between each test, all the tests were passed

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.

[codecov-io]

Codecov Report

Merging #971 into master will decrease coverage by 0.31%.
The diff coverage is 100%.

@@             Coverage Diff              @@
##             master     #971      +/-   ##
============================================
- Coverage     58.83%   58.51%   -0.32%     
+ Complexity      645      642       -3     
============================================
  Files            54       54              
  Lines          4127     4127              
  Branches        370      370              
============================================
- Hits           2428     2415      -13     
- Misses         1480     1493      +13     
  Partials        219      219

[diemol]

Thank you @jlamaille!