Ringtone is played through the speaker when the headphone is connected

Product: Krillin
FW version: Ubuntu 15.04 (r47)
HW version: MP
Material:

1. Connect the headphones in the DUT
2. Play some music
3. Receive a call in the DUT

Actual Result:

Ringtone is displayed in both headset and speaker

Expected Result:

Ringtone is displayed through the headphones

Reproducibility: 100%

Additional info:

Also music is displayed through the speaker during a second after the call is dismissed.

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still reproduces with r337 with Krillin

<https://goo.gl/ibyRO3>: “As an exception to the normal audio routing, if headphones are connected, for the first two seconds the ringtone should play through the headphones only (in case you’re using them to avoid disturbing other people), but from then on, it should play through the internal speaker as well (in case you left the phone somewhere with headphones connected by accident).”