Fossa integration (cadence-workflow#3162)

* Add .fossa.yml
* Add buildkite steps for fossa

.buildkite/pipeline.yml

@@ -1,4 +1,9 @@
 steps:
+  - label: "fossa analyze"
+    agents:
+      queue: "init"
+      docker: "*"
+    command: "./scripts/buildkite/fossa.sh"
   - label: ":golang: unit test"
     agents:
       queue: "workers"

.fossa.yml

@@ -0,0 +1,31 @@
+version: 2
+cli:
+  server: https://app.fossa.com
+  fetcher: custom
+  project: [email protected]:uber/cadence.git
+analyze:
+  modules:
+  - name: github.com/uber/cadence/cmd/canary
+    type: go
+    target: github.com/uber/cadence/cmd/canary
+    path: cmd/canary
+  - name: github.com/uber/cadence/cmd/server
+    type: go
+    target: github.com/uber/cadence/cmd/server
+    path: cmd/server
+  - name: github.com/uber/cadence/cmd/tools/cassandra
+    type: go
+    target: github.com/uber/cadence/cmd/tools/cassandra
+    path: cmd/tools/cassandra
+  - name: github.com/uber/cadence/cmd/tools/cli
+    type: go
+    target: github.com/uber/cadence/cmd/tools/cli
+    path: cmd/tools/cli
+  - name: github.com/uber/cadence/cmd/tools/copyright
+    type: go
+    target: github.com/uber/cadence/cmd/tools/copyright
+    path: cmd/tools/copyright
+  - name: github.com/uber/cadence/cmd/tools/sql
+    type: go
+    target: github.com/uber/cadence/cmd/tools/sql
+    path: cmd/tools/sql

scripts/buildkite/fossa.sh

@@ -0,0 +1,14 @@
+#!/bin/bash
+
+set -exo pipefail
+
+curl -H 'Cache-Control: no-cache' https://raw.githubusercontent.com/fossas/fossa-cli/master/install.sh | bash -s -- -b ~/
+
+~/fossa init
+~/fossa analyze
+
+# Capture the exit status
+EXIT_STATUS=$?
+
+echo "fossa script exits with status $EXIT_STATUS"
+exit $EXIT_STATUS