* move maps of plugins back in core
* go mod vendor
* more fixes
* fix imports
* Update core_test.go
* fix build
* more fixes
* more fixes
* up vendors after fixing sdk
* Update post_processor_mock.hcl2spec.go
* Leave implementatino of MapOf in the sdk for plugi tests
Other wise use the interface
* go mod tidy
* add MapOfDatasource type too
Before this change loading of a packerconfig would display `loaded
plugin ...` for any plugin defined in the packerconfig - even if it
didn't exist on disk. This change updates how plugins defined in
packerconfig are loaded to ensure that only successfully loaded plugins
get the lovely message `loaded plugin ...`. For any plugin that fails to
load Packer will log that it failed to load the plugin and continue
processing any other defined plugins.
* Add a test to ensure loadSingleComponent errors when plugin does not
exists
This change introduces a loadExternalComponent which can be used for
loading a single plugin path. The function is a combination of
the discoverSingle and discoverExternalComponents functions.
Adrien Delorme
Megan Marsh
sylviamoss
nywilken
Mitchell Hashimoto