Update bare exceptions to specify Exception.

This will keep us from accidentally catching program-exiting exceptions
like KeyboardInterupt and SystemExit.

lib/ansible/modules/system/service.py

@@ -481,7 +481,7 @@ class LinuxService(Service):
                     res = version_re.search(stdout)
                     if res:
                         self.upstart_version = LooseVersion(res.groups()[0])
-            except:
+            except Exception:
                 pass  # we'll use the default of 0.0.0
 
             self.svc_cmd = location['initctl']
@@ -720,7 +720,7 @@ class LinuxService(Service):
             if self.changed:
                 try:
                     write_to_override_file(override_file_name, override_state)
-                except:
+                except Exception:
                     self.module.fail_json(msg='Could not modify override file')
 
             return
@@ -1007,7 +1007,7 @@ class FreeBsdService(Service):
         rc, stdout, stderr = self.execute_command("%s %s %s %s" % (self.svc_cmd, self.name, 'rcvar', self.arguments))
         try:
             rcvars = shlex.split(stdout, comments=True)
-        except:
+        except Exception:
             # TODO: add a warning to the output with the failure
             pass