Do not call any selinux methods if selinux is disabled

[dirkboye]

Description

selinux.setfscreatecon_raw(None) will throw an OSError exception if selinux is disabled.

Related Issue Numbers

#1211

[rh-atomic-bot]

Can one of the admins verify this patch?
I understand the following commands:

• bot, add author to whitelist
• bot, test pull request
• bot, test pull request once

[rhatdan]

bot, add author to whitelist

[rhatdan]

bot, test pull request

[rhatdan]

LGTM

[dirkboye]

Hmm, I don't think the failure in centos/7/atomic is due to my pull request :-)

ERROR: test_find_image_on_registry (test_discovery.TestAtomicUtil)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/var/tmp/checkout/tests/unit/test_discovery.py", line 15, in test_find_image_on_registry
    self.assertEqual(ri.find_image_on_registry(), fq)
  File "Atomic/discovery.py", line 96, in find_image_on_registry
    raise RegistryInspectError("Unable to find {}".format(self.orig_input))
RegistryInspectError: Unable to find None

----------------------------------------------------------------------```

[rhatdan]

@baude @giuseppe PTAL

[giuseppe]

@rh-atomic-bot r+

[rh-atomic-bot]

📌 Commit c006bda has been approved by giuseppe

[rh-atomic-bot]

⌛ Testing commit c006bda with merge cf17675...

[rh-atomic-bot]

💔 Test failed - status-papr

[giuseppe]

@rh-atomic-bot retry

[rh-atomic-bot]

⌛ Testing commit c006bda with merge 119f123...

[rh-atomic-bot]

☀️ Test successful - status-papr
Approved by: giuseppe
Pushing 119f123 to master...