fix when the system does not have lsb_release script, but has /etc/lsb_release file

system/setup

@@ -376,28 +376,46 @@ class Facts(object):
 
     def get_lsb_facts(self):
         lsb_path = module.get_bin_path('lsb_release')
-        if lsb_path is None:
-            return self.facts
-        rc, out, err = module.run_command([lsb_path, "-a"])
-        if rc == 0:
+        if lsb_path:
+            rc, out, err = module.run_command([lsb_path, "-a"])
+            if rc == 0:
+                self.facts['lsb'] = {}
+            for line in out.split('\n'):
+                if len(line) < 1:
+                    continue
+                value = line.split(':', 1)[1].strip()
+                if 'LSB Version:' in line:
+                    self.facts['lsb']['release'] = value
+                elif 'Distributor ID:' in line:
+                    self.facts['lsb']['id'] = value
+                elif 'Description:' in line:
+                    self.facts['lsb']['description'] = value
+                elif 'Release:' in line:
+                    self.facts['lsb']['release'] = value
+                elif 'Codename:' in line:
+                    self.facts['lsb']['codename'] = value
+            if 'lsb' in self.facts and 'release' in self.facts['lsb']:
+                self.facts['lsb']['major_release'] = self.facts['lsb']['release'].split('.')[0]
+        elif lsb_path is None and os.path.exists('/etc/lsb-release'):
             self.facts['lsb'] = {}
-        for line in out.split('\n'):
-            if len(line) < 1:
-                continue
-            value = line.split(':', 1)[1].strip()
-            if 'LSB Version:' in line:
-                self.facts['lsb']['release'] = value
-            elif 'Distributor ID:' in line:
-                self.facts['lsb']['id'] = value
-            elif 'Description:' in line:
-                self.facts['lsb']['description'] = value
-            elif 'Release:' in line:
-                self.facts['lsb']['release'] = value
-            elif 'Codename:' in line:
-                self.facts['lsb']['codename'] = value
+            with open('/etc/lsb-release', 'r') as f:
+                for line in f.readlines():
+                    value = line.split('=',1)[1].strip()
+                    if 'DISTRIB_ID' in line:
+                        self.facts['lsb']['id'] = value
+                    elif 'DISTRIB_RELEASE' in line:
+                        self.facts['lsb']['release'] = value
+                    elif 'DISTRIB_DESCRIPTION' in line:
+                        self.facts['lsb']['description'] = value
+                    elif 'DISTRIB_CODENAME' in line:
+                        self.facts['lsb']['codename'] = value
+        else:
+            return self.facts
+
         if 'lsb' in self.facts and 'release' in self.facts['lsb']:
             self.facts['lsb']['major_release'] = self.facts['lsb']['release'].split('.')[0]
 
+
     def get_selinux_facts(self):
         if not HAVE_SELINUX:
             self.facts['selinux'] = False