Add FOSSA checks to Jenkins CI

Jenkinsfile

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+
+@Library('jps')
+_
+
+pipeline {
+  agent {
+    node {
+      label 'ubuntu-1804-overlay2'
+    }
+  }
+  options {
+    disableConcurrentBuilds()
+  }
+  stages {
+    stage("FOSSA Analyze") {
+      steps {
+
+        withCredentials([string(credentialsId: 'fossa-api-key', variable: 'FOSSA_API_KEY')]) {
+          withGithubStatus('FOSSA.scan') {
+            labelledShell returnStatus: false, returnStdout: true, label: "make fossa-analyze",
+                  script:'make -f Makefile.fossa BRANCH_NAME=${BRANCH_NAME} fossa-analyze'
+            labelledShell returnStatus: false, returnStdout: true, label: "make fossa-test",
+                  script: 'make -f Makefile.fossa BRANCH_NAME=${BRANCH_NAME} fossa-test'
+          }
+        }
+      }
+    }
+  }
+}

Makefile.fossa

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+REPO_PATH?=docker/buildx
+BUILD_ANALYZER?=docker/fossa-analyzer
+FOSSA_OPTS?=--option all-tags:true --option allow-unresolved:true --no-ansi
+
+fossa-analyze:
+	docker run -i --rm -e FOSSA_API_KEY=$(FOSSA_API_KEY) \
+		-v $(CURDIR)/$*:/go/src/github.com/$(REPO_PATH) \
+		-w /go/src/github.com/$(REPO_PATH) \
+		-e GO111MODULE=on \
+		$(BUILD_ANALYZER) analyze $(FOSSA_OPTS) --branch $(BRANCH_NAME)
+
+# This command is used to run the fossa test command
+fossa-test:
+	docker run -i --rm -e FOSSA_API_KEY=$(FOSSA_API_KEY) \
+		-v $(CURDIR)/$*:/go/src/github.com/$(REPO_PATH) \
+		-w /go/src/github.com/$(REPO_PATH) \
+		-e GO111MODULE=on \
+		$(BUILD_ANALYZER) test --debug