When in a Travis.CI build for Ruby v1.*, constrain chef to v11 so that we can maintain test coverage of older platform
When in a Travis.CI build for Ruby v1.*, constrain chef to v11 so that
we can maintain test coverage of older platform

rveznaver/chef-vault,rlisewski/chef-vault,mindyor/chef-vault,Nordstrom/chef-vault,chef/chef-vault,mosed/chef-vault,sean-horn/chef-vault,rbramwell/chef-vault,chef/chef-vault