tree c9d2f7083dca258756b437926cc0cb1ebcbf2b62
parent 7b410edc39745d94359ebccc0be0c4903fa659ae
author Federico Ressi <fressi@redhat.com> 1523268108 +0200
committer Federico Ressi <fressi@redhat.com> 1524045554 +0200

Fix automatic subnet CIDR generation

This helps generating subnet masks by checking for
subnet masks already used from the same test class.

This also avoids having to check if a subnet with
conflicting subnet CIDR already exists treating
subnet error creation by looking in a local set
of already reserved CIDRs.

It fixes a problem that makes create_subnet
try to reuse the same CIDRs more than once
producing test failures.

It also allows methods to blank list some CIDRs
to avoid create_subnet from using it an therefore
avoid interferences.

Change-Id: I73e08a6832777d972990c3e68c582ef61568ad4e