Valid v-model and filters

[armano2]

Tell us about your environment

• ESLint version: ^5.2.0
• eslint-plugin-vue version: 5.0.0
• Node version: 10

Please show your full configuration:
test case in project

What did you do?

<template>
    <input v-model="xx | myfilter">
</template>

What actually happened?

v-model' directives require the attribute value which is valid as LHS.