We don't support any Python 2 guest systems, drop the Python 2 bits from package-installs. Change-Id: Ica5c71c2926968d438ac1d0b0f16981cadf0bab1
This element was assuming that yaml was included as package, but there are systems not including it. So properly add yaml as a dependency. Change-Id: I72da2776674a3963657052b9a9715abcb4fab1e2 Partially-Fixes-Bug: #1715686