Use swift_dispersion_config

Use swift_dispersion_config to configure dispersion.conf

Implements: blueprint puppet-swift-ini-settings
Change-Id: I521eefa88e943858f850727f0e57ca35c6b695f2
Merge "Use swift_dispersion_config"
Preparing for 2.2.0 release.

Updated version and dependencies in Modulefile.
Updated release notes in README.md.

Change-Id: I4e1279848fcd198cbddf00f9ff9e3a1e6125ad33