message: Fix id in namespace selector
diff: @@ -231,7 +231,11 @@ export class NamespaceDropdown extends React.PureComponent<NamespaceDropdownProp
  return (
  <TourStopContainer info={GraphTourStops.Namespaces}>
  <Dropdown
  - toggle={<DropdownToggle onToggle={this.onToggle}>{this.namespaceButtonText()}</DropdownToggle>}
  + toggle={
  + <DropdownToggle id={'namespace-selector'} onToggle={this.onToggle}>
  + {this.namespaceButtonText()}
  + </DropdownToggle>
  + }
  isOpen={isOpen}
  >
  {this.getHeaderContent()}
  