replace dep with go modules (#16017)

- guide shamelessly stolen from prometheus/prometheus
- updates local interface of oauth exchange
- updates local impl of hclogger
- bump jaeger client version

closes #16088

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

@@ -0,0 +1,4 @@
+/jpgo
+jmespath-fuzz.zip
+cpu.out
+go-jmespath.test

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

vendor/github.com/jmespath/go-jmespath/README.md

@@ -0,0 +1,7 @@
+# go-jmespath - A JMESPath implementation in Go
+
+[![Build Status](https://img.shields.io/travis/jmespath/go-jmespath.svg)](https://travis-ci.org/jmespath/go-jmespath)
+
+
+
+See http://jmespath.org for more info.