[Stress Testing] Deleting fileshare

[l0lawrence]

Make a script that allows us to iterate through folders and delete fileshare files that we no longer want after we delete a namespace

[richardpark-msft]

Bonus points:

• Make it easy to get a zip file of all the logs, or copy them all locally. We can just use azcopy, so no need to write any code for that.
• Delete only a particular helm release - ie, for people like me that deploy Service Bus and Event Hubs releases into the same namespace. For safety maybe we should make that the default and make the user pass a -f switch to clear everything in the namespace.

[benbp]

Thinking about this a little: This will get tricky after the fact, i.e. you've changed the structure of your tests so the naming is different, but you want to clear up old namespaces/pod directories. I would say we should write a metadata file out to the fileshare to aid in cleanup, but that would populate a lot of extra directories in the cases where people don't use the fileshare (this is why we don't auto-create the directory for you in the first place).