Squashed 'external/workload-automation/' changes from 462a5b65..0ec8427d

0ec8427d fw/output: Implement retriving "augmentations" for `JobDatabaseOutput`s
cf5c3a27 fw/output: Add missing "augmentation" attribute to `JobOutput`
8ddc1c1e fw/version: Bump to development version
b5db4afc fw/version: Version Bump
f977c3df setup.py: Update PyYaml Dependency
769aae30 utils/serializer: Explicitly state yaml loader
a1ba3c6f utils/misc: Update load structure to use WA's yaml wrapper
536fc7eb workloads/stress_ng: Update to use WA's yaml wrapper
de36dacb fw/version: Bump to development versions
637bf57c fw/version: Bump revison versions
60ffd27b extras/Dockerfile: Update to use the latest release version
984a74a6 doc/changes: Update changelog for v3.1.2
5b8dc177 setup.py: Limit the maximum version of PyYAML
ba0cd7f8 fw/target/info: Bump target info version
adb3ffa6 fw/version: Introduce required version for devlib
bedd3bf0 docs/faq: Add entry about missing kernel config errors
03e463ad docs/installation: Add warning about using pip to install from github
2ce8d6fc output_processors/postgresql: Add missing default
1415f61e workloads/chrome: Fix for tablet devices
6ab1ae74 wa/apk_workloads: Update to not specify a default apk version.
a1cecc00 fw/workload: Add "support_versions" attribute to workloads
0cba3c68 fw/resource: Support matching APKs on multiple versions.
f267fc92 fw/workload: Use apk version for workload if not set.

git-subtree-dir: external/workload-automation
git-subtree-split: 0ec8427d054a2b2e901f35d69fee6ae1953618da