Fix for AUTO-824, added text to 'at' param description and modified one sample
initial directory and marshalling objects for audit log tests
Merge branch 'master' into test_history_log
Add minimal test case file
added more descriptions to param tables for scaling groups and policies
retrying LB node remove
added lb delete timeout in config
Merge branch 'lb_delete_refactor' into lb-delete-retry

Conflicts:
	otter/worker/launch_server_v1.py
lb node removal retry interval randomized

to avoid all DELETE at same time
lb add retry interval randomized
Non-422 failures are propogated

to allow 'Got LB error' logs.

This change is there in PR #565. So should have no effect when this
branched is merged with master having that PR merged
Retry config changes

random range and delete timeout
LB add/remove node tests updated
delete jobs are started in parallel
lint fixes
removed unnecessary change
Removed unused var - thanks @cyli
Remove stagerring related other changes - thanks @cyli
random_interval() function impl

that returns random interval each time it is called
Using new random_interval function - thanks @cyli

to randomly stagger lb add/delete retries