apw: owner
bjf,smb,apw,cascardo,klebers: cve first responders
sforshee,kamal: backup responders
sil2000,adconrad: needs access to copy out resulting binaries
sbeattie,rodrigo-zaiden: needs access to be able to publish the USNs
bromer, cengizcan: needs access for livepatch preparation (against ubuntu-esm et al)

PPAs fall into three categories:
1) regular PPAs (1-3) for use with stable kernels,
2) development PPAs (1-3) for use with development kernels only, and
3) ESM PPAs (1-3) for use with ESM bound kernels only.