go: include vendored modules

RHEL requires the source code for dependencies to be included in the
srpm. The spec file already expects that, but we've only included the
vendored modules (i.e., the `vendor` directory) in the `rhel-8.2.`
branch. Move vendoring to master, so that we can build RHEL packages
from it as well.

This commit is the result of running `go mod vendor`, which includes the
vendored sources and updates go.mod and go.sum files.

Fedora requires the opposite: dependencies should not be vendored. The
spec file already ignores the `vendor` directory by default.

vendor/github.com/jmespath/go-jmespath/Makefile

@@ -0,0 +1,44 @@
+
+CMD = jpgo
+
+help:
+	@echo "Please use \`make <target>' where <target> is one of"
+	@echo "  test                    to run all the tests"
+	@echo "  build                   to build the library and jp executable"
+	@echo "  generate                to run codegen"
+
+
+generate:
+	go generate ./...
+
+build:
+	rm -f $(CMD)
+	go build ./...
+	rm -f cmd/$(CMD)/$(CMD) && cd cmd/$(CMD)/ && go build ./...
+	mv cmd/$(CMD)/$(CMD) .
+
+test:
+	go test -v ./...
+
+check:
+	go vet ./...
+	@echo "golint ./..."
+	@lint=`golint ./...`; \
+	lint=`echo "$$lint" | grep -v "astnodetype_string.go" | grep -v "toktype_string.go"`; \
+	echo "$$lint"; \
+	if [ "$$lint" != "" ]; then exit 1; fi
+
+htmlc:
+	go test -coverprofile="/tmp/jpcov"  && go tool cover -html="/tmp/jpcov" && unlink /tmp/jpcov
+
+buildfuzz:
+	go-fuzz-build github.com/jmespath/go-jmespath/fuzz
+
+fuzz: buildfuzz
+	go-fuzz -bin=./jmespath-fuzz.zip -workdir=fuzz/testdata
+
+bench:
+	go test -bench . -cpuprofile cpu.out
+
+pprof-cpu:
+	go tool pprof ./go-jmespath.test ./cpu.out