[submodules]: update sonic-swss and sonic-sairedis

swss:

* 863b69c 2018-11-01 | [teamsyncd]: Fix bug when removing selectable in select function (sonic-net#665) (HEAD, origin/master, origin/HEAD) [Shuotian Cheng]
* 2c83b68 2018-10-31 | Warm reboot: bring up ports for whole system warm reboot (sonic-net#653) [Qi Luo]
* d049d65 2018-10-31 | [vstest]: get subscribed objects from appdb and asicdb (sonic-net#664) [lguohan]
* 057a329 2018-10-31 | [vstest]: change the redis mount point when --dvsname is provided. (sonic-net#663) [lguohan]
* 34e157e 2018-10-31 | [VS]: fix swss warm restart test (sonic-net#662) [Jipan Yang]

sairedis:

* c612c5e 2018-11-01 | Add specific comparison logic for more objects (sonic-net#360) (HEAD, origin/master, origin/HEAD) [Kamil Cudnik]
* a6b709a 2018-10-31 | [syncd] re-establish notifications after warm boot (sonic-net#368) [Ying Xie]
* d655d20 2018-10-29 | [syncd] partial warm recovery support (sonic-net#352) [Ying Xie]
* 4d9aa18 2018-10-29 | Add missing object types to virtual switch (sonic-net#364) [Kamil Cudnik]
* 1fdaf47 2018-10-29 | Add VS support for setting stats via redis DB channel (sonic-net#366) [Kamil Cudnik]

Signed-off-by: Guohan Lu <gulv@microsoft.com>