Implement ADR 026 (#7029)

* Add allow_governance_override_after_expiry flag to tendermint NewCreateClientCmd

* 1) Add LatestTimestamp to ClientState struct by adding a new attribute latest_timestamp to the message ClientState in proto/ibc/tendermint/tendermint.proto
2) Autogenerate x/ibc/07-tendermint/types/tendermint.pb.go by running 'make proto-gen'. Strangely, as a side effect x/distribution/types/genesis.pb.go, x/evidence/types/genesis.pb.go were also modified by the command 'make proto-gen'
3) Add Expired() function

* Fix tests

* 1) Add allow_governance_override_after_expiry flag to tendemint clientStatus
2) Add allow_governance_override_after_misbehaviour flag to tendermint ClientStatus

* Cosmetic changes

* Fix tests

* Add Unfreeze function

* Add new ClientUpdateProposal type

* Add minor fixes

* Add NewClientUpdateProposalHandler unit tests

* Fix proto-lint-docker

* Delete x/ibc/07-tendermint/tendermint_test.go

* Follow convention to put signer last in msg function signature

* 1) Add GetLatestTimestamp function  to ClientStatus interface
2) Change Expired() signature to Expired(now time.Time)

* 1) Add override flag to UpdateClient function
2) Fix tests

* Refactor HandleClientUpdateProposal

* 1) Extend exported Header interface with MarshalBinaryBare and UnmarshalBinaryBare methods
2) Move ClientUpdateProposal message to from ibc.proto to client.proto
3) Refactoring code
4) Add override flag to UpdateClient method
5) Fix tests

* 1) Uncomment tests and clean up code
2) Add basic validation of the header (ValidateBasic) when the override flag is true

* Cosmetic changes

* Add TODO comments

* Fix header MarshalBinaryBare, UnmarshalBinaryBare by using protobuf encoding/decoding

* Fix proto comments

* Fix override logic

* undo gettimestamp for solo machine and localhost

* add update after proposal func, some major refactoring in progress, various issues addressed

* fix tendermint proposal update handling

* run make proto-gen

* remove timestamp from tendemint client

* fix build issue for tm types

* apply various review comments

* add tests for 02-client functionality

* self review fixes

* typo

* update tests slightly

* update tendermint proposal handling tests

* Update x/ibc/02-client/keeper/proposal.go

Co-authored-by: Federico Kunze <31522760+fedekunze@users.noreply.github.com>

* Update x/ibc/07-tendermint/types/proposal_handle.go

Co-authored-by: Aditya <adityasripal@gmail.com>

* Update x/ibc/07-tendermint/types/proposal_handle.go

Co-authored-by: Aditya <adityasripal@gmail.com>

* apply most of @fedekunze and some of @AdityaSripal suggestions

* convert test to bools

* update docs and increase code cov

* fix build

* fix typo, remove omitempty

* add switch

* apply @fedekunze latest suggestions

* fix lint

* Update x/ibc/02-client/keeper/proposal_test.go

Co-authored-by: Christopher Goes <cwgoes@pluranimity.org>
Co-authored-by: Federico Kunze <31522760+fedekunze@users.noreply.github.com>
Co-authored-by: Colin Axner <colinaxner@berkeley.edu>
Co-authored-by: colin axnér <25233464+colin-axner@users.noreply.github.com>
Co-authored-by: Aditya <adityasripal@gmail.com>
Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>

client/grpc/reflection/reflection.pb.gw.go

@@ -106,6 +106,7 @@ func local_request_ReflectionService_ListImplementations_0(ctx context.Context,
 // RegisterReflectionServiceHandlerServer registers the http handlers for service ReflectionService to "mux".
 // UnaryRPC     :call ReflectionServiceServer directly.
 // StreamingRPC :currently unsupported pending https://github.com/grpc/grpc-go/issues/906.
+// Note that using this registration option will cause many gRPC library features (such as grpc.SendHeader, etc) to stop working. Consider using RegisterReflectionServiceHandlerFromEndpoint instead.
 func RegisterReflectionServiceHandlerServer(ctx context.Context, mux *runtime.ServeMux, server ReflectionServiceServer) error {
 
 	mux.Handle("GET", pattern_ReflectionService_ListAllInterfaces_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {

client/grpc/simulate/simulate.pb.gw.go

@@ -70,6 +70,7 @@ func local_request_SimulateService_Simulate_0(ctx context.Context, marshaler run
 // RegisterSimulateServiceHandlerServer registers the http handlers for service SimulateService to "mux".
 // UnaryRPC     :call SimulateServiceServer directly.
 // StreamingRPC :currently unsupported pending https://github.com/grpc/grpc-go/issues/906.
+// Note that using this registration option will cause many gRPC library features (such as grpc.SendHeader, etc) to stop working. Consider using RegisterSimulateServiceHandlerFromEndpoint instead.
 func RegisterSimulateServiceHandlerServer(ctx context.Context, mux *runtime.ServeMux, server SimulateServiceServer) error {
 
 	mux.Handle("POST", pattern_SimulateService_Simulate_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {