Use `az webapp up` (no flags) to redeploy

[anthonychu]

Extension name (the extension in question)

webapp

Description of issue (in as much detail as possible)

Currently, the user needs to specify the name (az webapp new -n <name>) to redeploy a folder. It would be great if the original deployment settings can be saved in a config file locally so that the user can simply run az webapp new to redeploy.

2 advantages:

• easier redeployment
• less error prone (won't accidentally run the command in the wrong folder an wipe out an existing app)

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