Use go's vendoring (#284)

* store dependency's in git

* since we vendor ... rm tech-depts

* aad make target 'vendor' to update vendor folder (manual task)

Makefile

@@ -19,13 +19,9 @@ _with-docker:
 
 all: deps build
 
-deps:
-	go get -u golang.org/x/net/context
-	go get -u golang.org/x/net/context/ctxhttp
-	go get -u github.com/golang/protobuf/proto
-	go get -u github.com/golang/protobuf/protoc-gen-go
-	go get -d docker.io/go-docker
-	go get -d github.com/jackspirou/syscerts
+vendor:
+	go mod tidy
+	go mod vendor
 
 formatcheck:
 	@([ -z "$(shell gofmt -d $(GOFILES_NOVENDOR) | head)" ]) || (echo "Source is unformatted"; exit 1)
@@ -50,13 +46,9 @@ test-server:
 	$(DOCKER_RUN) go test -race -timeout 30s github.com/woodpecker-ci/woodpecker/cmd/drone-server
 
 test-frontend:
-		(cd web/; yarn run test)
+	(cd web/; yarn run test)
 
 test-lib:
-	go get github.com/woodpecker-ci/woodpecker/cncd/pipeline/pipec
-	go get github.com/woodpecker-ci/woodpecker/remote/mock
-	go get github.com/woodpecker-ci/woodpecker/cli/drone/internal
-	go get -t github.com/woodpecker-ci/woodpecker/cncd/pipeline/pipeline/frontend/yaml
 	$(DOCKER_RUN) go test -race -timeout 30s $(shell go list ./... | grep -v '/cmd/')
 
 test: test-lib test-agent test-server
@@ -70,7 +62,6 @@ build-server:
 build-frontend:
 	(cd web/; yarn run build)
 
-
 build: build-agent build-server
 
 release-agent: