* Add grpc plugins
* Add grpc plugins
* Translate wrap info to/from proto
* Add nil checks
* Fix nil marshaling errors
* Provide logging through the go-plugin logger
* handle errors in the messages
* Update the TLS config so bidirectional connections work
* Add connectivity checks
* Restart plugin and add timeouts where context is not availible
* Add the response wrap data into the grpc system implementation
* Add leaseoptions to pb.Auth
* Add an error translator
* Add tests for translating the proto objects
* Fix rename of function
* Add tracing to plugins for easier debugging
* Handle plugin crashes with the go-plugin context
* Add test for grpcStorage
* Add tests for backend and system
* Bump go-plugin for GRPCBroker
* Remove RegisterLicense
* Add casing translations for new proto messages
* Use doneCtx in grpcClient
* Use doneCtx in grpcClient
* s/shutdown/shut down/
* Mention api_addr on VaultPluginTLSProvider logs, update docs
* Clarify message and mention automatic api_address detection
* Change error message to use api_addr
* Change error messages to use api_addr
* Lazy load plugins to avoid setup-unwrap cycle
* Remove commented blocks
* Refactor NewTestCluster, use single core cluster on basic plugin tests
* Set c.pluginDirectory in TestAddTestPlugin for setupPluginCatalog to work properly
* Add special path to mock plugin
* Move ensureCoresSealed to vault/testing.go
* Use same method for EnsureCoresSealed and Cleanup
* Bump ensureCoresSealed timeout to 60s
* Correctly handle nil opts on NewTestCluster
* Add metadata flag to APIClientMeta, use meta-enabled plugin when mounting to bootstrap
* Check metadata flag directly on the plugin process
* Plumb isMetadataMode down to PluginRunner
* Add NOOP shims when running in metadata mode
* Remove unused flag from the APIMetadata object
* Remove setupSecretPlugins and setupCredentialPlugins functions
* Move when we setup rollback manager to after the plugins are initialized
* Fix tests
* Fix merge issue
* start rollback manager after the credential setup
* Add guards against running certain client and server functions while in metadata mode
* Call initialize once a plugin is loaded on the fly
* Add more tests, update basic secret/auth plugin tests to trigger lazy loading
* Skip mount if plugin removed from catalog
* Fixup
* Remove commented line on LookupPlugin
* Fail on mount operation if plugin is re-added to catalog and mount is on existing path
* Check type and special paths on startBackend
* Fix merge conflicts
* Refactor PluginRunner run methods to use runCommon, fix TestSystemBackend_Plugin_auth
* Add backend plugin changes
* Fix totp backend plugin tests
* Fix logical/plugin InvalidateKey test
* Fix plugin catalog CRUD test, fix NoopBackend
* Clean up commented code block
* Fix system backend mount test
* Set plugin_name to omitempty, fix handleMountTable config parsing
* Clean up comments, keep shim connections alive until cleanup
* Include pluginClient, disallow LookupPlugin call from within a plugin
* Add wrapper around backendPluginClient for proper cleanup
* Add logger shim tests
* Add logger, storage, and system shim tests
* Use pointer receivers for system view shim
* Use plugin name if no path is provided on mount
* Enable plugins for auth backends
* Add backend type attribute, move builtin/plugin/package
* Fix merge conflict
* Fix missing plugin name in mount config
* Add integration tests on enabling auth backend plugins
* Remove dependency cycle on mock-plugin
* Add passthrough backend plugin, use logical.BackendType to determine lease generation
* Remove vault package dependency on passthrough package
* Add basic impl test for passthrough plugin
* Incorporate feedback; set b.backend after shims creation on backendPluginServer
* Fix totp plugin test
* Add plugin backends docs
* Fix tests
* Fix builtin/plugin tests
* Remove flatten from PluginRunner fields
* Move mock plugin to logical/plugin, remove totp and passthrough plugins
* Move pluginMap into newPluginClient
* Do not create storage RPC connection on HandleRequest and HandleExistenceCheck
* Change shim logger's Fatal to no-op
* Change BackendType to uint32, match UX backend types
* Change framework.Backend Setup signature
* Add Setup func to logical.Backend interface
* Move OptionallyEnableMlock call into plugin.Serve, update docs and comments
* Remove commented var in plugin package
* RegisterLicense on logical.Backend interface (#3017)
* Add RegisterLicense to logical.Backend interface
* Update RegisterLicense to use callback func on framework.Backend
* Refactor framework.Backend.RegisterLicense
* plugin: Prevent plugin.SystemViewClient.ResponseWrapData from getting JWTs
* plugin: Revert BackendType to remove TypePassthrough and related references
* Fix typo in plugin backends docs
Vishal Nayak