kinopub: add cdn2cdn.com, cdn2site.com, pushbr.com (#3240)

These CDN domains are used by Kinopub for:
- cdn2cdn.com: video streaming CDN
- cdn2site.com: video streaming CDN
- pushbr.com: poster/thumbnail images

Discovered via network traffic analysis on the Kinopub web app.
Without these domains proxied, poster images fail to load.

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Co-authored-by: Ivan Slezkin <ivanslezkin@Mac.lan>

data/kinopub

@@ -1,4 +1,3 @@
-cdn-service.space
 kino.pub
 kinopub.online
 
@@ -7,4 +6,9 @@ gfw.ovh # sub domains mirror
 mos-gorsud.co # kinopub domain to generate a mirror site through gfw.ovh
 
 # kinopub CDN servers
+cdn-service.space
+cdn2cdn.com
+cdn2site.com
+pushbr.com # poster images CDN
+
 regexp:(\w+)-static-[0-9]+\.cdntogo\.net$