Before:
  call ale#assert#SetUpLinterTest('yang', 'yang_lsp')

After:
  call ale#assert#TearDownLinterTest()

Execute(The executable should be configurable):
  AssertLinter 'yang-language-server', ale#Escape('yang-language-server')

  let b:ale_yang_lsp_executable = 'foobar'

  AssertLinter 'foobar', ale#Escape('foobar')
