Skip dns integration tests for production environment

Allow tests for production in cases:
   -  list of TLDs is empty
   -  pre-created testing TLDs

Removed create tld from resource setup, TLD will be
preconfigured in bootstrap script for CI environment type
or manually on production.

Related-Prod: PRODX-29973
Change-Id: Iccdec579f272bddde3f3228573143617bc5f8335
1 file changed