Add script that generates X509 certificates for testing dart:io SecureSocket

Add script that generates X509 certificates for testing dart:io SecureSocket

BUG=
R=sgjesse@google.com

Committed: https://github.com/dart-lang/sdk/commit/184c7b0182b537f174ef539c11ebd04de9ce9e0d

[Bill Hesse, 2015-10-13 15:08:18]

whesse@google.com changed reviewers:
+ sgjesse@google.com

[Søren Gjesse, 2015-10-14 07:22:12]

lgtm

https://codereview.chromium.org/1399243004/diff/20001/tests/standalone/io/cre...
File tests/standalone/io/create_sample_certificates (right):

https://codereview.chromium.org/1399243004/diff/20001/tests/standalone/io/cre...
tests/standalone/io/create_sample_certificates:4: # BSD-style license that can
be found in the LICENSE file.
nit: Add an empty line after the copyright message.

https://codereview.chromium.org/1399243004/diff/20001/tests/standalone/io/cre...
tests/standalone/io/create_sample_certificates:7: # and a server certificate,
Add 'set -e'?

https://codereview.chromium.org/1399243004/diff/20001/tests/standalone/io/cre...
tests/standalone/io/create_sample_certificates:58: cp root_authority.pem
../certificates/trusted_certs.pem
You don't want to also keep the keys for the root an intermediate authorities?

[Bill Hesse, 2015-10-14 08:50:11]

https://codereview.chromium.org/1399243004/diff/20001/tests/standalone/io/cre...
File tests/standalone/io/create_sample_certificates (right):

https://codereview.chromium.org/1399243004/diff/20001/tests/standalone/io/cre...
tests/standalone/io/create_sample_certificates:4: # BSD-style license that can
be found in the LICENSE file.
On 2015/10/14 07:22:12, Søren Gjesse wrote:
> nit: Add an empty line after the copyright message.

Done.

https://codereview.chromium.org/1399243004/diff/20001/tests/standalone/io/cre...
tests/standalone/io/create_sample_certificates:7: # and a server certificate,
On 2015/10/14 07:22:12, Søren Gjesse wrote:
> Add 'set -e'?

When I run this script with ., since it is not marked executable, then the set
-e persists into my shell, and causes my shell to quit the next time I run a
command that returns an error.

https://codereview.chromium.org/1399243004/diff/20001/tests/standalone/io/cre...
tests/standalone/io/create_sample_certificates:58: cp root_authority.pem
../certificates/trusted_certs.pem
On 2015/10/14 07:22:12, Søren Gjesse wrote:
> You don't want to also keep the keys for the root an intermediate authorities?

No.  I only want what we will use in the tests.  When we need more, I'll copy it
in.

[Bill Hesse, 2015-10-14 08:50:53]

Committed patchset #3 (id:40001) manually as
184c7b0182b537f174ef539c11ebd04de9ce9e0d (presubmit successful).