/usr/share/igtf-policy/classic/DZeScience.namespaces is in igtf-policy-classic 1.59-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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#NAMESPACES-VERSION: 1.0
#
# @(#)0a49430a.namespaces
# CA alias    : 
#    subord_of: 
#    subjectDN: /DC=DZ/DC=ARN/O=DZ e-Science GRID/CN=DZ e-Science CA
#    hash     : 0a49430a
#    (generated automatically from 0a49430a.signing_policy)
#
TO Issuer "/DC=DZ/DC=ARN/O=DZ e-Science GRID/CN=DZ e-Science CA" \
  PERMIT Subject "/DC=DZ/DC=ARN/.*"
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