Updated release process to use goreleaser (jenkins-x#4130)

Signed-off-by: Cai Cooper <caicooper82@gmail.com>

.gitignore

@@ -23,6 +23,7 @@ debug
 #Various temporary created while building/running jx.
 /build/
 release/
+dist/
 scanning/
 .updatebot-repos/
 .terraform/

.goreleaser.yml

@@ -0,0 +1,28 @@
+checksum:
+  # You can change the name of the checksums file.
+  # Default is `{{ .ProjectName }}_{{ .Version }}_checksums.txt`.
+  name_template: "{{ .ProjectName }}_checksums.txt"
+
+  # Algorithm to be used.
+  # Accepted options are sha256, sha512, sha1, crc32, md5, sha224 and sha384.
+  # Default is sha256.
+  algorithm: sha256
+
+changelog:
+  # set it to true if you wish to skip the changelog generation
+  skip: true
+
+release:
+  # If set to true, will not auto-publish the release.
+  # Default is false.
+  draft: false
+
+  # If set to auto, will mark the release as not ready for production
+  # in case there is an indicator for this in the tag e.g. v1.0.0-rc1
+  # If set to true, will mark the release as not ready for production.
+  # Default is false.
+  prerelease: false
+
+  # You can change the name of the GitHub release.
+  # Default is `{{.Tag}}`
+  name_template: "{{.Version}}"

Makefile

@@ -284,10 +284,9 @@ release: clean build test-slow-integration linux darwin win arm ## Release the b
 		cd ./build/arm; tar -zcvf ../../release/jx-linux-arm.tar.gz jx; \
 	fi
 
-	go get -u github.com/progrium/gh-release
-	gh-release checksums sha256
-	GITHUB_ACCESS_TOKEN=$(GITHUB_ACCESS_TOKEN) gh-release create $(RELEASE_ORG_REPO) $(VERSION) master $(VERSION)
-
+	go get -u github.com/goreleaser/goreleaser
+	GITHUB_TOKEN=$(GITHUB_ACCESS_TOKEN) goreleaser release --config=.goreleaser.yml --rm-dist
+	# Don't create a changelog for the distro
 	@if [[ -z "${DISTRO}" ]]; then \
 		./build/linux/jx step changelog  --verbose --header-file docs/dev/changelog-header.md --version $(VERSION) --rev $(PULL_BASE_SHA); \
 	fi
@@ -315,11 +314,11 @@ codecov-validate:
 fmt: ## Format the code
 	$(eval FORMATTED = $(shell $(GO) fmt ./...))
 	@if [ "$(FORMATTED)" == "" ]; \
-      	then \
-      	    echo "All Go files properly formatted"; \
-      	else \
-      		echo "Fixed formatting for: $(FORMATTED)"; \
-      	fi
+	then \
+		echo "All Go files properly formatted"; \
+	else \
+		echo "Fixed formatting for: $(FORMATTED)"; \
+	fi
 
 .PHONY: lint
 lint: ## Lint the code