renaming this struct to more clearly be session, as that is what it
handles.
Splitting out files for easier readability.
Signed-off-by: Vincent Batts <vbatts@redhat.com>
This is part of the ongoing effort to remove the deprecated server/
package, and generally cleanup and simplify the codebase.
Signed-off-by: Solomon Hykes <solomon@docker.com>
