Fixed build failures relating to help2man

Summary

This patch fixes build failures related to unpackaged man pages, and similar.

Description

Builds were failing as soon as help2man was installed on the build machines. This patch fixes unpackaged files in lalsimulation, mispackaged files in lalinference, and missing BuildRequires for lalapps.

API Changes and Justification

Backwards Compatible Changes

• This change introduces no API changes
• This change adds new API calls

Backwards Incompatible Changes

• This change modifies an existing API
• This change removes an existing API

Review Status

/cc @adam-mercer