Update git submodules
* Update puppet-zaqar from branch 'master'
- Merge "Expect python3 client package in CentOS8"
- Expect python3 client package in CentOS8
In CentOS, we expect to have python3 client package in 8.x while we
expect to have python2 in 7.x .
Fix unit tests to expect the correct version according to os major
version.
Change-Id: Ie4fd708bbc9dcd80e1e69addb5a6a087f0deea2c
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