Handle small MAX_ICE_CONFIG_COUNT gracefully

[vikramdattu]

• Since, we only use a single ICE server config anyway. To save space we might want to set the value to say 1
• The received list may have more than one entries. We gracefully drop the remaining entries and continue.

[sirknightj]

Hi @vikramdattu, thanks for the changes.

I have another PR out (#2127) which touches the same code. I've added your changes to there (4dbfbd4) and adjusted the test to match.

Note that there is some ICE config parsing logic in receiveLwsMessage which I believe is not relevant since get ice server config is an rest api, not a websocket one. We should remove that at some point in the future.

[vikramdattu]

I'm not sure if we indeed get the ICE server config alongside the offer in the KVS case. So, I added the logic in that parser as well.

[sirknightj]

Adding this as part of the other PR.