Extend timeout
On armv7 environment, the timeout is too short http://rubyci.s3.amazonaws.com/scw-9d6766/ruby-trunk/log/20180319T191706Z.diff.html.gz
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63151 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Extend timeout
On armv7 environment, the timeout is too short
http://rubyci.s3.amazonaws.com/scw-9d6766/ruby-trunk/log/20180319T191706Z.diff.html.gz
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63151 b2dd03c8-39d4-4d8f-98ff-823fe69b080e