Fix uses of deprecated pause / unpause methods in XMPP.
Fix uses of deprecated pause / unpause methods in XMPP.

harrissoerja/vumi,vishwaprakashmishra/xmatrix,harrissoerja/vumi,harrissoerja/vumi,vishwaprakashmishra/xmatrix,TouK/vumi,TouK/vumi,vishwaprakashmishra/xmatrix,TouK/vumi