Update GCN notice types to reflect additional facilities
There are two places in our GCN Notices that are specific to the present set of gravitational-wave facilities and collaborations:
- The IVORN, which starts with the string
<contactName>element in the
<Who>section, which contains the text
LIGO Scientific Collaboration and Virgo Collaboration.
We need to update this to reflect additional facilities (KAGRA and eventually LIGO-India) or simply make it completely generic and future-proof.