Passing the API access keys to cdpcurl

After you generate the API access key and private key, you must pass the keys to cdpcurl.

You have two options for passing the API access key and private key to cdpcurl:

Recommended method: Create a profile in $HOME/.cdp/credentials that contains the keys, and then use the --profile option in cdpcurl calls. For example:
```
[myuserprofile]
cdp_access_key_id = 6744f22e-c46a-406d-ad28-987584f45351
cdp_private_key = abcdefgh...................................=
```
Alternatively, when you make the API call, pass the keys to cdpcurl using the --access-key and --private-key options.