从github.com部署Chaincode导致错误：找不到包

I am learning chaincode development on Bluemix.

I have chain code under subfolders as below:

src->github.com->username->LoyaltyProgram
                           MyWallet.go (Chaincode)
                         ->LoyaltyProgram->main->Airline
                           Airline.go (Chaincode)

I have a package LoyaltyPkg.go that is under the following folder and is imported in Mywallet.go and Airline.go chain code.

src->github.com->username->LoyaltyProgram->LoyaltyPkgUtil

I am able to deploy MyWallet.go on to Bluemix using the deploy spec. However, when I try to deploy the Airline.go chain code, I am getting the following error:

cannot find package "github.com/jaibhavani/LoyaltyProgram/LoyaltyPkgUtil" in any of:

OUT - /opt/go/src/github.com/jaibhavani/LoyaltyProgram/LoyaltyPkgUtil (from $GOROOT)

OUT - /opt/gopath/src/github.com/jaibhavani/LoyaltyProgram/LoyaltyPkgUtil (from $GOPATH)"

The package is available on github.com under the above folder. I don't know why I am unable to deploy the Airline.go chaincode to Bluemix.

Please note, I am able to build Airline.go file locally with no errors.