feat(ci): fail early when no go binaries are available

(cherry picked from commit 510ab02)

.ci/pipelines/release_zeebe.groovy

@@ -140,7 +140,7 @@ spec:
                 }
 
                 container('golang') {
-                    sh '.ci/scripts/release/post-github.sh'
+                    sh '.ci/scripts/release/post-release-go.sh'
                 }
             }
         }

.ci/pipelines/release_zeebe_java11.groovy

@@ -139,7 +139,7 @@ spec:
                 }
 
                 container('golang') {
-                    sh '.ci/scripts/release/post-github.sh'
+                    sh '.ci/scripts/release/post-release-go.sh'
                 }
             }
         }

.ci/scripts/release/post-github.sh → .ci/scripts/release/post-release-go.sh

@@ -3,7 +3,7 @@
 cd "clients/go/internal/embedded"
 
 echo "${DEVELOPMENT_VERSION}" > data/VERSION
-"${GOPATH}/go-bindata" -pkg embedded -o embedded.go -prefix data/ data/
+go-bindata -pkg embedded -o embedded.go -prefix data/ data/
 
 git commit -am "build(project): prepare next development version (Go client)"
 git push origin "${RELEASE_BRANCH}"

.ci/scripts/release/prepare-go.sh

@@ -11,3 +11,14 @@ export CGO_ENABLED=0
 export GO111MODULE=on
 go get -u "github.com/smola/gocompat/...@v0.3.0"
 go get -u "github.com/go-bindata/go-bindata/...@v3"
+
+# Verify binary is available under $GOPATH/bin
+if ! command -v go-bindata > /dev/null 2>&1; then
+  echo "Failed to install go-bindata, go-bindata is not available on the path"
+  exit 1
+fi
+
+if ! command -v gocompat > /dev/null 2>&1; then
+  echo "Failed to install gocopmat, gocompat is not available on the path"
+  exit 1
+fi