Update icons and strings for always-on VPN info

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<vector xmlns:android="http://schemas.android.com/apk/res/android"

        android:width="48dp"

        android:height="48dp"

        android:viewportWidth="48.0"

        android:viewportHeight="48.0">

    <path

        android:fillColor="#FF000000"

        android:pathData="M25.3,20c-1.65,-4.66 -6.08,-8 -11.3,-8 -6.63,0 -12,5.37 -12,12s5.37,12 12,12c5.22,0 9.65,-3.34 11.3,-8H34v8h8v-8h4v-8H25.3zM14,28c-2.21,0 -4,-1.79 -4,-4s1.79,-4 4,-4 4,1.79 4,4 -1.79,4 -4,4z"/>

</vector>