Catching shlex splitting error in fact gathering get_cmdline call

Fixes #8352

lib/ansible/module_utils/facts.py

@@ -327,12 +327,15 @@ class Facts(object):
         data = get_file_content('/proc/cmdline')
         if data:
             self.facts['cmdline'] = {}
+            try:
                 for piece in shlex.split(data):
                     item = piece.split('=', 1)
                     if len(item) == 1:
                         self.facts['cmdline'][item[0]] = True
                     else:
                         self.facts['cmdline'][item[0]] = item[1]
+            except ValueError, e:
+                pass
 
     def get_public_ssh_host_keys(self):
         dsa_filename = '/etc/ssh/ssh_host_dsa_key.pub'