Add hover text to column search field

Added title field indicating a regex is expected to search column input fields

This will help users correctly enter valid input into the column search,
avoiding an issue our test team had when trying to search with '(x86'.

Signed-off-by: Dylan Leclair dleclair@blackberry.com

packages/react-components/src/components/__tests__/__snapshots__/table-renderer-components.test.tsx.snap

@@ -27,6 +27,7 @@ exports[`<TableOutputComponent /> Empty search filter renderer 1`] = `
   onClick={[Function]}
   onMouseEnter={[Function]}
   onMouseLeave={[Function]}
+  title="Enter a regular expression"
 >
   <svg
     aria-hidden="true"

packages/react-components/src/components/table-renderer-components.tsx

@@ -110,6 +110,7 @@ export class SearchFilterRenderer extends React.Component<SearchFilterRendererPr
                 onMouseEnter={this.onMouseEnterHandler}
                 onMouseLeave={this.onMouseLeaveHandler}
                 onClick={this.onClickHandler}
+                title="Enter a regular expression"
             >
                 {!this.state.hasClicked && !this.state.hasHovered && (
                     <FontAwesomeIcon style={{ marginLeft: '10px' }} icon={faSearch} />