go-cloud key escaping may lead to invalid objects for Azure

[srerickson]

The gocloud.dev/blob package escapes objects keys on write and unescapes them on read. For example, from the azureblob implementation:

// Go CDK supports all UTF-8 strings; to make this work with services lacking
// full UTF-8 support, strings must be escaped (during writes) and unescaped
// (during reads). The following escapes are performed for azureblob:
//   - Blob keys: ASCII characters 0-31, 34 ("\""), 35 ("#"), 37 ("%"), 63 ("?"),
//     92 ("\"), and 127 are escaped to "__0x<hex>__".

The storage locations for content paths using these characters won't match the values stored in inventory manifest. Storage root layouts that use percent encoding are also affected.

[srerickson]

Close this when gocloud is removed as a dependency.