fix tests for SLES and CoreOS

* include #15230

lib/ansible/module_utils/facts.py

@@ -126,8 +126,8 @@ class Facts(object):
                     ('/etc/alpine-release', 'Alpine'),
                     ('/etc/release', 'Solaris'),
                     ('/etc/arch-release', 'Archlinux'),
-                    ('/etc/SuSE-release', 'SuSE'),
                     ('/etc/os-release', 'SuSE'),
+                    ('/etc/SuSE-release', 'SuSE'),
                     ('/etc/gentoo-release', 'Gentoo'),
                     ('/etc/os-release', 'Debian'),
                     ('/etc/lsb-release', 'Mandriva'),
@@ -459,7 +459,7 @@ class Facts(object):
                                                 self.facts['distribution_release'] = release.groups()[0]
                                         elif 'enterprise' in data.lower() and 'VERSION_ID' in line:
                                              release = re.search('^VERSION_ID="?[0-9]+\.?([0-9]*)"?', line) # SLES doesn't got funny release names
-                                             if release.group(1):
+                                             if release and release.group(1):
                                                  release = release.group(1)
                                              else:
                                                  release = "0" # no minor number, so it is the first release
@@ -521,9 +521,11 @@ class Facts(object):
 
                             if self.facts['distribution'].lower() == 'coreos':
                                 data = get_file_content('/etc/coreos/update.conf')
+                                if data:
                                     release = re.search("^GROUP=(.*)", data)
                                     if release:
                                         self.facts['distribution_release'] = release.group(1).strip('"')
+
                     else:
                         self.facts['distribution'] = name
         machine_id = get_file_content("/var/lib/dbus/machine-id") or get_file_content("/etc/machine-id")