Integrate proptypes for our shared components.

- Fix unit tests.
- Fix linter errors.

src/components/BasicChip/BasicChip.jsx

@@ -1,4 +1,6 @@
 import React from 'react';
+import PropTypes from 'prop-types';
+
 import { Chip } from '@patternfly/react-core';
 import './basicChip.scss';
 
@@ -10,4 +12,8 @@ const BasicChip = ({ text }) => (
   </Chip>
 );
 
+BasicChip.propTypes = {
+  text: PropTypes.string.isRequired,
+};
+
 export default BasicChip;