Create Redisable#redis (#9633)

app/lib/activity_tracker.rb

app/lib/activitypub/activity.rb

app/lib/feed_manager.rb

app/lib/ostatus/activity/base.rb

app/lib/potential_friendship_tracker.rb

app/models/concerns/redisable.rb

app/models/feed.rb

app/models/trending_tags.rb

app/services/batched_remove_status_service.rb

app/services/follow_service.rb

app/services/post_status_service.rb

app/services/remove_status_service.rb

app/workers/scheduler/feed_cleanup_scheduler.rb