Fix hostname mismatch caused by new gem
Fix hostname mismatch caused by new gem

Pin to travis-artifacts 0.2.2 to fix hostname mismatch errors with 0.3.0

The new version of travis-artifacts is preventing our builds from
uploading to S3 with the following error:

/home/travis/.rvm/rubies/ruby-1.9.3-p545/lib/ruby/1.9.1/openssl/ssl-internal.rb:129:in
`post_connection_check': hostname does not match the server certificate
(OpenSSL::SSL::SSLError) (Excon::Errors::SocketError)

And the overall build did not fail because the upload tasks are part of the
after_success stage. This was intentional, but we may want to consider a
build success to include the whole pipeline...

janisz/marathon,spacejam/marathon,c089/marathon,sepiroth887/marathon,EvanKrall/marathon,guenter/marathon,MrMarvin/marathon,bobrik/marathon,sledigabel/marathon,manojlds/marathon,ramitsurana/marathon,sledigabel/marathon,timcharper/marathon,natemurthy/marathon,EvanKrall/marathon,vivekjuneja/marathon,14Zen/marathon,ss75710541/marathon,ramitsurana/marathon,murat-lacework/marathon,matsluni/marathon,airbnb/marathon,Yhgenomics/marathon,pugna0/marathon,gsantovena/marathon,mesosphere/marathon,Caerostris/marathon,IanSaunders/marathon,IanSaunders/marathon,mesosphere/marathon,gsantovena/marathon,hangyan/marathon,Caerostris/marathon,mesosphere/marathon,sledigabel/marathon,felixb/marathon,sttts/marathon,hangyan/marathon,meln1k/marathon,EasonYi/marathon,Kosta-Github/marathon,HardikDR/marathon,sielaq/marathon,mesosphere/marathon,ramitsurana/marathon,gsantovena/marathon,natemurthy/marathon,cherrydocker/marathon-1,quamilek/marathon,lelezi/marathon,pugna0/marathon,drewrobb/marathon,pugna0/marathon,Caerostris/marathon,EvanKrall/marathon,mikejihbe/marathon,sepiroth887/marathon,sttts/marathon,ayouwei/marathon,yp-engineering/marathon,guenter/marathon,airbnb/marathon,sielaq/marathon,14Zen/marathon,guenter/marathon,cgvarela/marathon,vivekjuneja/marathon,titosand/marathon,rtward/marathon,HardikDR/marathon,cgvarela/marathon,felixb/marathon,Yhgenomics/marathon,sttts/marathon,yp-engineering/marathon,meln1k/marathon,spacejam/marathon,drewrobb/marathon,manojlds/marathon,mikejihbe/marathon,c089/marathon,timcharper/marathon,okuryu/marathon,sielaq/marathon,janisz/marathon,airbnb/marathon,14Zen/marathon,natemurthy/marathon,mikejihbe/marathon,murat-lacework/marathon,lelezi/marathon,pgkelley4/marathon,gsantovena/marathon,SivagnanamCiena/marathon,matsluni/marathon,IanSaunders/marathon,bsideup/marathon,hangyan/marathon,ayouwei/marathon,janisz/marathon,drewrobb/marathon,meln1k/marathon,HardikDR/marathon,gsantovena/marathon,titosand/marathon,bobrik/marathon,cherrydocker/marathon-1,felixb/marathon,drewrobb/marathon,cherrydocker/marathon-1,felixb/marathon,bsideup/marathon,rtward/marathon,pgkelley4/marathon,bobrik/marathon,mesosphere/marathon,c089/marathon,EvanKrall/marathon,matsluni/marathon,Yhgenomics/marathon,sttts/marathon,sielaq/marathon,spacejam/marathon,vivekjuneja/marathon,quamilek/marathon,janisz/marathon,timcharper/marathon,SivagnanamCiena/marathon,ayouwei/marathon,Kosta-Github/marathon,cgvarela/marathon,rtward/marathon,guenter/marathon,airbnb/marathon,meln1k/marathon,MrMarvin/marathon,Caerostris/marathon,bobrik/marathon,quamilek/marathon,lelezi/marathon,SivagnanamCiena/marathon,janisz/marathon,14Zen/marathon,ss75710541/marathon,c089/marathon,manojlds/marathon,EasonYi/marathon,okuryu/marathon,guenter/marathon,bsideup/marathon,Caerostris/marathon,murat-lacework/marathon,EasonYi/marathon,ss75710541/marathon,MrMarvin/marathon,sepiroth887/marathon,okuryu/marathon,spacejam/marathon,meln1k/marathon