cache for ruby jobs does not need to cache tmp/cache

Chad Woolleyrequested to merge
remove-tmp-cache-from-ruby-cache into master

What does this MR do?

Cache for ruby jobs does not need to cache tmp/cache (except for 'direction' proxy resource, but it has its own dedicated cache key)

Related issues

Relates #6689 (closed) #6740 (closed)

Edited by Chad Woolley

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