Merge pull request #44638 from ixdy/porter-cert

Automatic merge from submit-queue (batch tested with PRs 44222, 44614, 44292, 44638)

Update dummy certificate used in porter image

**What this PR does / why we need it**: the dummy certificate used for the porter image is incompatible with go1.8+ since it is missing NULL parameters for the RSA public key.

I haven't pushed the new porter image yet.

I verified that this appears to fix the issue. Based on https://github.com/kubernetes/kubernetes/issues/38228#issuecomment-280213590, for the old cert:

```console
$ openssl x509 -in localhost.crt -outform der | openssl asn1parse -inform der -i
...
  105:d=4  hl=2 l=   9 prim:     OBJECT            :rsaEncryption
  116:d=3  hl=2 l=  75 prim:    BIT STRING
...
```

and the new cert:
```console
$ openssl x509 -in localhost.crt -outform der | openssl asn1parse -inform der -i
...
  127:d=4  hl=2 l=   9 prim:     OBJECT            :rsaEncryption
  138:d=4  hl=2 l=   0 prim:     NULL              
  140:d=3  hl=4 l= 271 prim:    BIT STRING        
...
```

**Release note**:

```release-note
NONE
```

cc @liggitt @lavalamp @luxas

test/images/porter/README.md

@@ -2,9 +2,9 @@ This directory contains go source, Dockerfile and Makefile for making a test
 container which serves requested data on ports specified in ENV variables.
 
 The included localhost.crt is a PEM-encoded TLS cert with SAN IPs
-"127.0.0.1" and "[::1]", expiring at the last second of 2049 (the end
+"127.0.0.1" and "[::1]", expiring in January 2084, generated from
-of ASN.1 time), generated from src/crypto/tls:
+src/crypto/tls:
-go run generate_cert.go  --rsa-bits 512 --host 127.0.0.1,::1,example.com --ca --start-date "Jan 1 00:00:00 1970" --duration=1000000h
+go run generate_cert.go  --rsa-bits 2048 --host 127.0.0.1,::1,example.com --ca --start-date "Jan 1 00:00:00 1970" --duration=1000000h
 
 To use a different cert/key, mount them into the pod and set the 
 CERT_FILE and KEY_FILE environment variables to the desired paths.

test/images/porter/localhost.crt

@@ -1,10 +1,19 @@
 -----BEGIN CERTIFICATE-----
-MIIBdzCCASOgAwIBAgIBADALBgkqhkiG9w0BAQUwEjEQMA4GA1UEChMHQWNtZSBD
+MIIDGTCCAgGgAwIBAgIRAOAAu25xDsyahNZBSXsUWhswDQYJKoZIhvcNAQELBQAw
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-EwEB/wQFMAMBAf8wLgYDVR0RBCcwJYILZXhhbXBsZS5jb22HBH8AAAGHEAAAAAAA
+z/fw3ABwvJQ9rJw9+Xb8zZqBUpoLZzjjUDTk22pNAS9XMjRSOUtLzPEYH5fL61Ev
-AAAAAAAAAAAAAAEwCwYJKoZIhvcNAQEFA0EAAoQn/ytgqpiLcZu9XKbCJsJcvkgk
+J7FD7twinaUbZAUQvg1nsLELt87t+bo964p6p+z77g6TBa6PPezVndzmR3F0VPHV
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+RLPOd9gqwboFchho3z68ZNb4rnKg1fybuaOPXmwBKDRkaQMAzlnDVe246rx6O6wg
------END CERTIFICATE-----
+bJKvxaXviejcKMPuZ0EDjxzoWHjnh6ooiOUCAwEAAaNoMGYwDgYDVR0PAQH/BAQD
+AgKkMBMGA1UdJQQMMAoGCCsGAQUFBwMBMA8GA1UdEwEB/wQFMAMBAf8wLgYDVR0R
+BCcwJYILZXhhbXBsZS5jb22HBH8AAAGHEAAAAAAAAAAAAAAAAAAAAAEwDQYJKoZI
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+4XFrUHspRDZcGXFILnAsNOpfK7UmUU0wkbFghkI=
+-----END CERTIFICATE-----

test/images/porter/localhost.key

@@ -1,9 +1,27 @@
 -----BEGIN RSA PRIVATE KEY-----
-MIIBPAIBAAJBAN55NcYKZeInyTuhcCwFMhDHCmwaIUSdtXdcbItRB/yfXGBhiex0
+MIIEogIBAAKCAQEAnduibxYcYVMZsSx7aTpuEBDGOfEm+XTf4OeCuettNRe7rPDW
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-1Aq8MJgTaYsDQWyU/hDq5YkDJc9e9DSCvUIzqxQWMQE=
+2mcyjflvV6315NpOz6NBfVzdvcFwKbmU4k9M56u1tihg8riy4DISViOT83uudgeQ
------END RSA PRIVATE KEY-----
+cb+Pyzvb/plmtm72DpodP2ZHlXb6nUxu6XMOrxiqkCtx/Rscwt0zDg8S5ou2GokX
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+nbVwcbxVjeBqQ1CyN329adNI1LsnPqy59LzBxDM/JWa47A6Y7Vc=
+-----END RSA PRIVATE KEY-----