Refactors the framework package to implement the plugin versioning changes
needed for BIA v1 and overall package refactoring to support plugin versions
in different packages. This should be all that's needed to move on to
v2 for BackupItemAction. The remaining plugin types still need similar
refactoring to what's being done here for BIA before attempting a
v2 implementation.
Signed-off-by: Scott Seago <sseago@redhat.com>
Added ItemSnapshotter.proto
Added item_snapshotter Go interface
Added framework components for item_snapshotter
Updated plugins doc with ItemSnapshotter info
Added SnapshotPhase to item_snapshotter.go
ProgressOutputOutput now includes a phase as well as an error string for problems that occured
Signed-off-by: Dave Smith-Uchida <dsmithuchida@vmware.com>