tests: Log information about ssh, add comments to test.
* tests/openpgp/ssh-import.scm (ssh-version-string): New variable, and log the binary and version used in the test. (ssh-supports?): Document how we test what algorithms are supported by ssh, and log ssh-keygen's replies.
We have some trouble with this test on macOS, and adding some more
information in verbose mode will hopefully make tracking down these
problems easier in the future.
- GnuPG-bug-id: T2980
- Signed-off-by: Justus Winter <email@example.com>