Refactor plugin management:
- support multiple plugins per executable
- support restarting a plugin process in the event it terminates
- simplify plugin lifecycle management by using separate managers for
each scope (server vs backup vs restore)
Signed-off-by: Andy Goldstein <andy.goldstein@gmail.com>
The log location hook was matching github.com/heptio/ark and stripping
off that + 1 more char. This meant that
github.com/heptio/ark-plugin-example/foo.go was being listed as
plugin-example/foo.go instead of
github.com/heptio/ark-plugin-example/foo.go.
Signed-off-by: Andy Goldstein <andy.goldstein@gmail.com>