Revert the --force flags
use the update id as metric for role caching
Shift the movement of cache to job folder from rsync task to python
Only install roles and collections if needed
Deal with roles and collections for jobs without sync
Skip local copy if roles or collections turned off
update docs for content caching
Design pivot - use empty cache dir to indicate lack of content
Do not cache content if we did not install content
Test changes to allay concerns about reliability of local_path
Do not blow away cache for SCM inventory updates
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