Add rhel support for osversion

Author: stpabhi

pkg/util/helpers.go

@@ -91,6 +91,8 @@ func GetOSVersion() (string, error) {
 		return getDebianVersion(osReleaseMap), nil
 	case "centos":
 		return getDebianVersion(osReleaseMap), nil
+	case "rhel":
+		return getDebianVersion(osReleaseMap), nil
 	default:
 		return "", fmt.Errorf("Unsupported ID in /etc/os-release: %q", osReleaseMap["ID"])
 	}

pkg/util/helpers_test.go

@@ -167,6 +167,12 @@ func TestGetOSVersion(t *testing.T) {
 			expectedOSVersion: "centos 7 (Core)",
 			expectErr:         false,
 		},
+		{
+			name:              "rhel",
+			fakeOSReleasePath: "testdata/os-release-rhel",
+			expectedOSVersion: "rhel 7.7 (Maipo)",
+			expectErr:         false,
+		},
 		{
 			name:              "Unknown",
 			fakeOSReleasePath: "testdata/os-release-unknown",

pkg/util/testdata/os-release-rhel

@@ -0,0 +1,15 @@
+NAME="Red Hat Enterprise Linux Server"
+VERSION="7.7 (Maipo)"
+ID="rhel"
+ID_LIKE="fedora"
+VERSION_ID="7.7"
+PRETTY_NAME="Red Hat Enterprise Linux Server 7.7 (Maipo)"
+ANSI_COLOR="0;31"
+CPE_NAME="cpe:/o:redhat:enterprise_linux:7.7:GA:server"
+HOME_URL="https://www.redhat.com/"
+BUG_REPORT_URL="https://bugzilla.redhat.com/"
+
+REDHAT_BUGZILLA_PRODUCT="Red Hat Enterprise Linux 7"
+REDHAT_BUGZILLA_PRODUCT_VERSION=7.7
+REDHAT_SUPPORT_PRODUCT="Red Hat Enterprise Linux"
+REDHAT_SUPPORT_PRODUCT_VERSION="7.7"