MFC r304443, r326034, r326065

r304443 by imp:
Improve the pattern matching so that internal *'s work, as well as
[set] notation. This fixes pattern matching for recently added drives
that would set the NCQ Trim being broken incorrectly.

PR: 210686
Tested-by: Tomoaki AOKI

r326034:
Fix multiple bugs in cam_strmatch

* Wrongly matches strings that are shorter than the pattern
* Fails to match negative character sets
* Fails to match character sets that aren't at the end of the pattern
* Fails to match character ranges

Reviewed by: imp
Sponsored by: Spectra Logic Corp
Differential Revision: https://reviews.freebsd.org/D13173

r326065:
Fix uninitialized variable from 326034

Reported by: Coverity
CID: 1382887
X-MFC-With: 326034
Sponsored by: Spectra Logic Corp

MFC r315320:

Start adding basic tests for cam(3)

This change contains several negative and positive tests for:
- cam_open_device
- cam_close_device
- cam_getccb
- cam_freeccb

This also contains a test for the failure case noted in bug 217649,
i.e., O_RDWR must be specified because pass(4) requires it.

This test unfortunately cannot assume that cam-capable devices are
present, so the user must explicitly provide a device via
`test_suites.FreeBSD.cam_test_device`. In the future, a test kernel
module might be shipped, or ctl(4) might be used, as a test device
when testing out libcam, which will allow the tests to do away with
having to specify an explicit test device.

Start adding basic tests for cam(3)

This change contains several negative and positive tests for:
- cam_open_device
- cam_close_device
- cam_getccb
- cam_freeccb

This also contains a test for the failure case noted in bug 217649,
i.e., O_RDWR must be specified because pass(4) requires it.

This test unfortunately cannot assume that cam-capable devices are
present, so the user must explicitly provide a device via
`test_suites.FreeBSD.cam_test_device`. In the future, a test kernel
module might be shipped, or ctl(4) might be used, as a test device
when testing out libcam, which will allow the tests to do away with
having to specify an explicit test device.

Reviewed by: asomers, ken (earlier diff)
MFC after: 1 week
Sponsored by: Dell EMC Isilon
Differential Revision: D9928