Add libibmad

[knedlsepp]

libibmad provides low layer IB functions for use by the IB diagnostic and management programs. In CentOS 6 and 7 it was not part yet of the rdma-core package. It is however usually part of a OFED installation and thus should also be added on conda-forge. The license was imported from libibmad-1.3.13-1.el7.x86_64.rpm at /usr/share/doc/libibmad-1.3.13/COPYING.

Checklist:

• [x] if you have added a CDT, it appears in the cdt_slugs.yaml file and you have rerun the script python gen_cdt_recipes.py.
• [ ] ~~if you have changed the CDT generator code (rpm.py), you have bumped the build number in conda_build_config.yaml and have remade all of the recipes via running python gen_cdt_recipes.py --force~~
• [ ] ~~if you have added a custom CDT recipe, you have added the name of the CDT with custom: true in the cdt_slugs.yaml file.~~
• [x] all CDT recipes have build number set by {{ cdt_build_number }} for old-style/legacy CDTs or {{ cdt_build_number|int + 1000 }} for new-style CDTs
• [x] if you see a warning about a CDT not having a license, you have added the license_file key in the cdt_slugs.yaml file with the path to the appropriate license in licenses/

[beckermr]

LGTM! Thank you!

[knedlsepp]

LGTM! Thank you!

Thank you! :-)