Added test and support of ASFF template (#594)

* Added test and support of ASFF template

* Improve test coverage

* Fixed/Improved tests

* Removed extra space

* Added NVD score/vectors, Added logic to trim description due to file size restriction

* Included quotations around AccountID

integration/client_server_test.go

@@ -17,6 +17,7 @@ import (
 	"github.com/urfave/cli/v2"
 
 	"github.com/aquasecurity/trivy/internal"
+	"github.com/aquasecurity/trivy/pkg/report"
 )
 
 type args struct {
@@ -309,12 +310,27 @@ func TestClientServer(t *testing.T) {
 			},
 			golden: "testdata/busybox-with-lockfile.json.golden",
 		},
+		{
+			name: "alpine 3.10 integration with ASFF template",
+			testArgs: args{
+				Format:       "template",
+				TemplatePath: "@../contrib/asff.tpl",
+				Version:      "dev",
+				Input:        "testdata/fixtures/alpine-310.tar.gz",
+			},
+			golden: "testdata/alpine-310.asff.golden",
+		},
 	}
 
 	app, addr, cacheDir := setup(t, "", "")
 
 	for _, c := range cases {
 		t.Run(c.name, func(t *testing.T) {
+			report.Now = func() time.Time {
+				return time.Date(2020, 8, 10, 7, 28, 17, 958601, time.UTC)
+			}
+			os.Setenv("AWS_REGION", "test-region")
+			os.Setenv("AWS_ACCOUNT_ID", "123456789012")
 			osArgs, outputFile, cleanup := setupClient(t, c.testArgs, addr, cacheDir, c.golden)
 			defer cleanup()