Report logic unable to find the hyperledger caliper logo due to Hyperledger changing our github location

[davidkel]

packages/caliper-core/lib/manager/report/template/report.html has the following line

<img src="https://caliper.github.io/caliper/assets/img/hyperledger_caliper_logo_color.png" style="width:95%;" alt="">

This used to work even when the shift of the docs location was done, but not it fails. The new docs make the image available and the new location is

<img src="https://hyperledger-caliper.github.io/caliper/assets/img/hyperledger_caliper_logo_color.png" style="width:95%;" alt="">

In the future we need a more robust way of getting this image, most likely put the graphic into the caliper-core reports directory and be able to reference it from there.