Fix selinux context after intitial OSD mount.

The SELinux context is not preserved across file-systems, we need to
manually set the context of the root of the file-system in order to
preserve SELinux context inheritence rules.

Signed-off-by: Milan Broz <mbroz@redhat.com>
Reviewed-by: Boris Ranto <branto@redhat.com>

src/ceph-disk

@@ -953,6 +953,12 @@ def mount(
                 path,
                 ],
             )
+        command(
+           [
+                'restorecon',
+                path,
+                ],
+           )
     except subprocess.CalledProcessError as e:
         try:
             os.rmdir(path)