BootstrapSelect - use global jQuery

[himdel]

to make sure selectpicker is there, even when global jQuery comes from bower
this means we now depend on global jquery + bootstrap-select, but works in master and gaprindashvili

---

Fixes

miq_debug.self-a72dc0b9f690f63b4688fbca3774709918c11fdfb7b5fc454690d11d007fc88b.js?body=1:29 TypeError: m(...).selectpicker is not a function
	at t.value (BootstrapSelect.js:29)
	at commitLifeCycles (react-dom.production.min.js:159)

ManageIQ/manageiq-ui-classic#3963: needed because otherwise, we need to backport all the changes to support moving ui-classic dependencies from bower to npm. If global jQuery comes from bower, any version of jQuery from npm will not see bootstrap-select.

(This PR could be gaprindashvili-only if so desired.)

[priley86]

@himdel if you can rebase this w/ latest master and update yarn.lock and add $ to eslint globals, this PR is fine to merge...

just make this change to .eslintrc.js and tests will pass:

module.exports = {
  env: {
    browser: true,
    'jest/globals': true
  },
  globals: {
    __: true,
    sprintf: true,
    $: true
  },

[himdel]

@priley86 Thanks, should be ready now :)

[priley86]

thanks!