Pass ldflags to goreleaser

Signed-off-by: Oren Shomron <shomron@gmail.com>

.goreleaser.yml

@@ -2,7 +2,7 @@ project_name: ks
 builds:
   - main: ./cmd/ks/main.go
     binary: ks
-    ldflags: -X main.version={{.Version}}
+    ldflags: -X "main.version={{.Version}}" -X "main.apimachineryVersion={{.Env.APIMACHINERY_VER}}" -X "generator.revision={{.Commit}}"
     goos:
       - linux
       - darwin
@@ -33,3 +33,5 @@ brew:
     email: heptibot@heptio.com
   homepage: "https://ksonnet.io"
   description: "The ksonnet command line utility. Manage and deploy Kubernetes applications."
+snapshot:
+  name_template: SNAPSHOT-{{.Commit}}

Makefile

@@ -13,6 +13,7 @@
 #    See the License for the specific language governing permissions and
 #    limitations under the License.
 
+SHELL=/bin/bash
 VERSION?=dev-$(shell date +%FT%T%z)
 KS_BIN?=ks
 
@@ -76,4 +77,8 @@ generate:
 clean:
 	$(RM) ./ks ./docs/cli-reference/ks*.md
 
-.PHONY: all ks test clean vet fmt docs install docker-image
+snapshot:
+	$(shell goreleaser --rm-dist || true)
+	$(shell APIMACHINERY_VER=$(APIMACHINERY_VER) goreleaser --snapshot)
+
+.PHONY: all ks test clean vet fmt docs install docker-image snapshot