Update version code for v1.8.1
Update version code for v1.8.1

Change-Id: I9abd1c9ad4b6abed6a2cf6cf9f144aaacb857322

Shedings/connectbot,nemobis/connectbot,zeldin/connectbot,nixomose/connectbot,changjiashuai/connectbot,jklein24/connectbot,changjiashuai/connectbot,alescdb/connectbot,Potass/ConnectBot,jklein24/connectbot,rhansby/connectbot,windowhero0/connectbot,redshodan/connectbot,kruton/connectbot,brunodles/connectbot,windowhero0/connectbot,FauxFaux/connectbot,brunodles/connectbot,FauxFaux/connectbot,ipmobiletech/connectbot,Potass/ConnectBot,kruton/connectbot,Lekensteyn/connectbot,redshodan/connectbot,redshodan/connectbot,jklein24/connectbot,lotan/connectbot,FauxFaux/connectbot,iiordanov/BSSH,galexander1/connectbot,brunodles/connectbot,Lekensteyn/connectbot,nixomose/connectbot,Shedings/connectbot,iiordanov/BSSH,connectbot/connectbot,lotan/connectbot,Lekensteyn/connectbot,changjiashuai/connectbot,Lekensteyn/connectbot,khorimoto/connectbot,rhansby/connectbot,kruton/connectbot,ipmobiletech/connectbot,nemobis/connectbot,iiordanov/BSSH,galexander1/connectbot,zeldin/connectbot,khorimoto/connectbot,Shedings/connectbot,ipmobiletech/connectbot,khorimoto/connectbot,trygveaa/connectbot,rhansby/connectbot,trygveaa/connectbot,alescdb/connectbot,lotan/connectbot,nixomose/connectbot,Potass/ConnectBot,ipmobiletech/connectbot,zeldin/connectbot,alescdb/connectbot,trygveaa/connectbot,galexander1/connectbot,nemobis/connectbot,zeldin/connectbot,connectbot/connectbot,windowhero0/connectbot,connectbot/connectbot