fix: trim quote characters in osinfo

Some distributions may use quotes in their os-info file (ex: centos).
The osinfo helpers must handle these cases for correct parsing.

helpers/osinfo.go

@@ -160,7 +160,7 @@ type OSInfo struct {
 
 // GetOSReleaseFieldValue provides access to internal OSInfo OSReleaseField's
 func (btfi *OSInfo) GetOSReleaseFieldValue(value OSReleaseField) string {
-	return btfi.osReleaseFieldValues[value]
+	return strings.Trim(btfi.osReleaseFieldValues[value], "\"")
 }
 
 // GetOSReleaseFilePath provides the path for the used os-release file as it might
@@ -226,7 +226,9 @@ func (btfi *OSInfo) discoverOSDistro() error {
 		}
 		btfi.osReleaseFieldValues[keyID] = val[1]
 		if keyID == OS_ID {
-			btfi.osReleaseID = stringToOSReleaseID[strings.ToLower(val[1])]
+			osVal := strings.ToLower(val[1])
+			osVal = strings.Trim(osVal, "\"") // trim potential parentheses (in centos)
+			btfi.osReleaseID = stringToOSReleaseID[osVal]
 		}
 	}
 

helpers/osinfo_test.go

@@ -30,6 +30,13 @@ func TestGetOSInfo(t *testing.T) {
 			expectedOSReleaseID:       UBUNTU,
 			expectedError:             nil,
 		},
+		{
+			testName:                  "env os-release filepath",
+			osReleaseFilePath:         "testdata/os-release-centos",
+			expectedOSReleaseFilePath: "testdata/os-release-centos",
+			expectedOSReleaseID:       CENTOS,
+			expectedError:             nil,
+		},
 		{
 			testName:                  "default os-release filepath",
 			osReleaseFilePath:         "",

helpers/testdata/os-release-centos

@@ -0,0 +1,13 @@
+NAME="CentOS Stream"
+VERSION="8"
+ID="centos"
+ID_LIKE="rhel fedora"
+VERSION_ID="8"
+PLATFORM_ID="platform:el8"
+PRETTY_NAME="CentOS Stream 8"
+ANSI_COLOR="0;31"
+CPE_NAME="cpe:/o:centos:centos:8"
+HOME_URL="https://centos.org/"
+BUG_REPORT_URL="https://bugzilla.redhat.com/"
+REDHAT_SUPPORT_PRODUCT="Red Hat Enterprise Linux 8"
+REDHAT_SUPPORT_PRODUCT_VERSION="CentOS Stream"