Bug 1275545 Use Sereal for Cache::Memcached::Fast r=dylan

[is2ei]

I changed it to use "Sereal".

[dylanwh]

This seems to fail with the error:

Serialize method is not specified at /app/local/lib/perl5/x86_64-linux-thread-multi/Cache/Memcached/Fast.pm line 590.

[dylanwh]

@is2ei:

re:

19:29 <is2ei> This will cause your specified IP to be inaccessible. Please change
19:29 <is2ei> the IP or name of your host only network so that it no longer matches
19:29 <is2ei> that of
19:29 <is2ei> a bridged or non-hostonly network.
19:29 <is2ei> Bridged Network Address: '192.168.3.0'
19:29 <is2ei> Host-only Network 'enp2s0': '192.168.3.0'

The fix for that is to set BMO_DB_IP and BMO_WEB_IP to different values.
if you're on linux or OSX, that means:

export BMO_DB_IP=192.168.12.42
export BMO_WEB_IP=192.168.12.43

before running any of the vagrant commands.

[is2ei]

@dylanwh Thanks Dylan!
I fixed the error. Could you check it?