Add alpine 3.14 support (#410)

Author: RTann

e2etests/sanity_test.go

@@ -1827,6 +1827,25 @@ func TestImageSanity(t *testing.T) {
 				},
 			},
 		},
+		{
+			image:    "alpine:3.14.0",
+			registry: "https://registry-1.docker.io",
+			source:   "NVD",
+			username: os.Getenv("DOCKER_IO_PULL_USERNAME"),
+			password: os.Getenv("DOCKER_IO_PULL_PASSWORD"),
+			expectedFeatures: []v1.Feature{
+				{
+					Name:          "apk-tools",
+					VersionFormat: "apk",
+					Version:       "2.12.5-r1",
+				},
+				{
+					Name:          "busybox",
+					VersionFormat: "apk",
+					Version:       "1.33.1-r2",
+				},
+			},
+		},
 	} {
 		t.Run(testCase.image, func(t *testing.T) {
 			verifyImageHasExpectedFeatures(t, cli, testCase.username, testCase.password, testCase.source, &types.ImageRequest{Image: testCase.image, Registry: testCase.registry, UncertifiedRHELScan: testCase.uncertifiedRHEL}, testCase.checkContainsOnly, testCase.expectedFeatures, testCase.unexpectedFeatures)

pkg/wellknownnamespaces/set.go

@@ -5,12 +5,6 @@ import "github.com/stackrox/rox/pkg/set"
 var (
 	// KnownStaleNamespaces is the set of base namespaces we know have stale vulnerabilities.
 	KnownStaleNamespaces = set.NewFrozenStringSet(
-		"alpine:v3.2",
-		"alpine:v3.3",
-		"alpine:v3.4",
-		"alpine:v3.5",
-		"alpine:v3.6",
-		"alpine:v3.7",
 		"debian:8",
 		"oracle:5",
 		"ubuntu:12.10",
@@ -30,12 +24,19 @@ var (
 	// If you add a new Debian or Ubuntu version, be sure to add it to
 	// database/namespace_mapping.go as well.
 	KnownSupportedNamespaces = set.NewFrozenStringSet(
+		"alpine:v3.2",
+		"alpine:v3.3",
+		"alpine:v3.4",
+		"alpine:v3.5",
+		"alpine:v3.6",
+		"alpine:v3.7",
 		"alpine:v3.8",
 		"alpine:v3.9",
 		"alpine:v3.10",
 		"alpine:v3.11",
 		"alpine:v3.12",
 		"alpine:v3.13",
+		"alpine:v3.14",
 		"alpine:edge",
 		"amzn:2018.03",
 		"amzn:2",