No warning(s) in the output file with -quiet option. Report command (#885)

commands/report.go

@@ -87,6 +87,7 @@ func (*ReportCmd) Usage() string {
 		[-http-proxy=http://192.168.0.1:8080]
 		[-debug]
 		[-debug-sql]
+		[-quiet]
 		[-pipe]
 		[-cvedb-type=sqlite3|mysql|postgres|redis|http]
 		[-cvedb-sqlite3-path=/path/to/cve.sqlite3]
@@ -112,6 +113,8 @@ func (p *ReportCmd) SetFlags(f *flag.FlagSet) {
 	f.BoolVar(&c.Conf.Debug, "debug", false, "debug mode")
 	f.BoolVar(&c.Conf.DebugSQL, "debug-sql", false, "SQL debug mode")
 
+	f.BoolVar(&c.Conf.Quiet, "quiet", false, "Quiet mode. No output on stdout")
+
 	wd, _ := os.Getwd()
 	defaultConfPath := filepath.Join(wd, "config.toml")
 	f.StringVar(&p.configPath, "config", defaultConfPath, "/path/to/toml")