Added gosec scan (#311)

.travis.yml

@@ -5,3 +5,4 @@ services:
 - docker
 script:
 - make test
+- make security-scan

Makefile

@@ -27,6 +27,10 @@ build:
 	go mod tidy
 	go build $(LDFLAGS)
 
+security-scan:
+	go get github.com/securego/gosec/cmd/gosec
+	gosec -no-fail ./...
+
 release-builds:
 	rm -rf build
 	mkdir build