Allow if.bind and repeat.for only on template tag (optional rule)

[zakjan]

<template>
    <div if.bind="..."></div> <!-- should warn -->
    <div repeat.for="..."></div> <!-- should warn -->
    <template if.bind="..."></template> <!-- ok -->
    <template repeat.for="..."></template> <!-- ok -->
</template>

My usecase is to have cleaner templates, where control flow attributes are not hidden amongst presentational attributes.