* validate required storage props (#85)
Centralizes validation of required storage config properties within
the storage package. Requiremens are checked eagerly at
configuration creation, and lazily at config retrieval.
Additionally, updates /pkg/storage tests to use suites
and assert funcs.
* add validation failure tests to storage
* add common config and encryption passwd
Adds a provider-independent configuration handler, and the
the encryption password config property. The password is used
to encrypt and decrypt the kopia repository properties file.
* fix corso_password in ci.yml
* actually use the corso password in testing
* replace passwd in ci.yml with a secret
* ci.yml secret typo fix
A small collection of changes and code cleanup to successfully run
'corso repo init s3' manually. Adds a default s3 url (might want
this configurable for local testing) and aws session token support.
* add e2e wiring of cli to kopia
Now that pkg/storage and internal/kopia are in place, we
can wire up the init flow from the cli all the way to kopia. Testing
harness for this functionality still needs investigation afterward.
* factor out awsVars struct for s3Cfg
Adds the s3 provider set to the repo cli commands. Flag, env
vars, and other configuration is still incomplete and will require
iteration. But this sets us up for quick testing of the commands.
