Add Coccoc Vietnamese Search Engine to bots list

[summercms]

See github issue: #568

Coccocbot Web

Mozilla/5.0 (compatible; coccocbot-web/1.0; +http://help.coccoc.com/searchengine)

Coccocbot Image

Mozilla/5.0 (compatible; coccocbot-image/1.0; +http://help.coccoc.com/searchengine)

Dead Bots (not going to be added to this repo)

coccoc/1.0

Mozilla/5.0 (compatible; coccoc/1.0; +http://help.coccoc.com/searchengine)

imagecoccoc/1.0

Mozilla/5.0 (compatible; imagecoccoc/1.0; +http://help.coccoc.com/searchengine)
Mozilla/5.0 (compatible; imagecoccoc/1.0; +http://help.coccoc.com/)

coccoc/1.0

Mozilla/5.0 (compatible; coccoc/1.0; +http://help.coccoc.com/)
coccoc/1.0 (http://help.coccoc.com/)
coccoc/1.0 (http://help.coccoc.vn/)
coccoc/1.0 ()

coccoc

coccoc

Link: https://help.coccoc.com/search-engine

[coveralls]

Coverage increased (+0.02%) to 99.97% when pulling 4965de9 on ayumi-cloud:Coccocbot into 880b9fa on WhichBrowser:master.

[NielsLeenheer]

Fixed in ecba5ed