Bump stdlib dependency from >=2.3.0 to >=3.2.0

Most puppet components are already using >=3.2.0, this commit will
standardize the requirements.

Change-Id: Iad8ece12f7e05717731f0f071644ac4addfb4ce9
Improve readability of swift::xfs

Improve readability of swift::xfs using ensure_packages
from the stdlib.

Change-Id: I9550c6e9415e49b5363e21c73c935390c3a635e3
Merge "Improve readability of swift::xfs"
Merge "Bump stdlib dependency from >=2.3.0 to >=3.2.0"