Fix file/dir creation permissions

Author: geofffranks

src/code.cloudfoundry.org/lib/testsupport/asg_builder.go

@@ -23,7 +23,7 @@ func CreateTempFile(content string) (string, error) {
 	}
 
 	path := tmpFile.Name()
-	err = os.WriteFile(path, []byte(content), os.ModePerm)
+	err = os.WriteFile(path, []byte(content), 0644)
 	if err != nil {
 		return "", err
 	}

src/code.cloudfoundry.org/policy-server/integration/helpers/helpers.go

@@ -252,7 +252,7 @@ func WriteConfigFile(policyServerConfig interface{}) string {
 	configBytes, err := json.Marshal(policyServerConfig)
 	Expect(err).NotTo(HaveOccurred())
 
-	err = os.WriteFile(configFile.Name(), configBytes, os.ModePerm)
+	err = os.WriteFile(configFile.Name(), configBytes, 0644)
 	Expect(err).NotTo(HaveOccurred())
 
 	return configFile.Name()

src/code.cloudfoundry.org/test-helpers/tls_helpers.go

@@ -181,6 +181,6 @@ func buildCertPem(privKey *rsa.PrivateKey, caFilePath string) (cert []byte, key
 func writeClientCredFile(data []byte) string {
 	tempFile, err := os.CreateTemp(os.TempDir(), "clientcredstest")
 	Expect(err).NotTo(HaveOccurred())
-	Expect(os.WriteFile(tempFile.Name(), data, os.ModePerm)).To(Succeed())
+	Expect(os.WriteFile(tempFile.Name(), data, 0600)).To(Succeed())
 	return tempFile.Name()
 }