pgsql: ci: Collect core files on NetBSD and OpenBSD

ci: Collect core files on NetBSD and OpenBSD

Support for NetBSD and OpenBSD operating systems have been added to CI in the
prior commit. Now add support for collect core files and generating backtraces
using for all core files.

Author: Nazir Bilal Yavuz <byavuz81@gmail.com>
Discussion: https://postgr.es/m/CAN55FZ32ySyYa06k9MFd+VY5vHhUyBpvgmJUZae5PihjzaurVg@mail.gmail.com

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/c45963c5d5cc0a3b8739ba158f781452a3fd89c5

Modified Files
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.cirrus.tasks.yml               | 15 +++++++++++++++
src/tools/ci/cores_backtrace.sh |  6 ++++--
2 files changed, 19 insertions(+), 2 deletions(-)