certFiles := []string{
		"/etc/ssl/certs/ca-certificates.crt",                // Debian/Ubuntu/Gentoo etc.
		"/etc/pki/tls/certs/ca-bundle.crt",                  // Fedora/RHEL 6
		"/etc/ssl/ca-bundle.pem",                            // OpenSUSE
		"/etc/pki/tls/cacert.pem",                           // OpenELEC
		"/etc/pki/ca-trust/extracted/pem/tls-ca-bundle.pem", // CentOS/RHEL 7
		"/etc/ssl/cert.pem",                                 // Alpine Linux

	"istio.io/istio/pkg/config/constants"
	"istio.io/istio/pkg/env"
	"istio.io/istio/pkg/log"
	"istio.io/istio/pkg/security"
	"istio.io/istio/security/pkg/cmd"
	"istio.io/istio/security/pkg/pki/ca"
	"istio.io/istio/security/pkg/pki/ra"
	caserver "istio.io/istio/security/pkg/server/ca"
	"istio.io/istio/security/pkg/server/ca/authenticate"
	"istio.io/istio/security/pkg/util"
)

type caOptions struct {

	tb "istio.io/istio/pilot/pkg/trustbundle"
	"istio.io/istio/pkg/config/constants"
	"istio.io/istio/pkg/log"
	"istio.io/istio/pkg/sleep"
	"istio.io/istio/security/pkg/k8s/chiron"
	"istio.io/istio/security/pkg/pki/ca"
	certutil "istio.io/istio/security/pkg/util"
)

const (
	// defaultCertGracePeriodRatio is the default length of certificate rotation grace period,
	// configured as the ratio of the certificate TTL.

	"istio.io/istio/pkg/kube"
	"istio.io/istio/pkg/test"
	"istio.io/istio/pkg/test/util/assert"
	"istio.io/istio/pkg/test/util/retry"
	"istio.io/istio/pkg/testcerts"
	"istio.io/istio/security/pkg/pki/util"
)

func loadCertFilesAtPaths(t TLSFSLoadPaths) error {
	// create cert directories if not existing
	if err := os.MkdirAll(filepath.Dir(t.testTLSCertFilePath), os.ModePerm); err != nil {

	"istio.io/istio/pkg/log"
	"istio.io/istio/pkg/network"
	"istio.io/istio/pkg/security"
	"istio.io/istio/pkg/spiffe"
	"istio.io/istio/pkg/util/sets"
	"istio.io/istio/security/pkg/pki/ca"
	"istio.io/istio/security/pkg/pki/ra"
	caserver "istio.io/istio/security/pkg/server/ca"
	"istio.io/istio/security/pkg/server/ca/authenticate"
	"istio.io/istio/security/pkg/server/ca/authenticate/kubeauth"
)

const (