support for running jobs over container sqlite3 database file

you can query container data by connecting it to a specific read-only device (`/dev/input` is recommended)
the connected db will be raw read-only sqlite3 file, i.e. your code needs to know how to query it
The syntax for connecting to container db would be:
~~~~
{
    "device": "input",
    "path": "swift://account/container"
}
~~~~
you can use wildcards in container name, the rules are same as with objects
some examples:
`"path": "swift://account/*"` - query all containers, i.e. connect zerovm instance to each container db
`"path": "swift://account/*/*"` - query all objects, i.e. connect zerovm instance to each object (will be expensive)