[#1886] Update release managers.


Problem description
===================

We have updated the buildbot master and it contains some changes in the way arguments are passed to slaves.

In new version arguments are enclosed in quotes.

previous version
```
paver command some argument
```
new version
```
paver command 'some argument'
```

Changes description
===================

paver release script was updated to support this change.


How to try and test the changes
===============================

reviewers @alibotean 

We can not test this without releasing a new version.

I have already used this code for releasing server 2.2.0.

This is just to let you know about the changes and record them.

Thanks!