Intermittent v9.18 build fails on Fedora COPR buildsys, always in `netmgr_test` ?

[PGNet Dev]

>> You might want to set the CI=true environment variable to reduce the set of the netmgr unit tests to just the more reliable subset.
> 
> thx, trying that now @ COPR

with

	export CI=true

in .spec @

	https://src.fedoraproject.org/fork/pgfed/rpms/bind/blob/rawhide/f/bind.spec#_357

similarly random.intermittent FAILs,

  3x OK, 0x FAIL  https://copr.fedorainfracloud.org/coprs/pgfed/bind-FORK/build/4784746/
  1x OK, 2x FAIL  https://copr.fedorainfracloud.org/coprs/pgfed/bind-FORK/build/4784745/
  0x OK, 3x FAIL  https://copr.fedorainfracloud.org/coprs/pgfed/bind-FORK/build/4784744/
  1x OK, 2x FAIL  https://copr.fedorainfracloud.org/coprs/pgfed/bind-FORK/build/4784743/

either the export is incorrectly def'd/placed, or insufficient