Cleanup test definition

Leave installation of dependencies on tests itself. Use beakerlib to
install packages.

tests/tests.yml

@@ -8,20 +8,4 @@
     repositories:
     - repo: "https://github.com/InfrastructureServices/bind-tests.git"
       dest: "bind-tests"
-      branch: "master"
-    required_packages:
-    - bind
-    - bind-chroot
-    - bind-sdb-chroot
-    - redhat-lsb
-    - bind-utils
-    - dnf-utils
-    - kyua
-    - bind-devel
-    - perl-Net-DNS
-    - perl-Net-DNS-Nameserver
-    - perl-Time-HiRes
-    - softhsm
-    - bind-pkcs11
-    - bind-pkcs11-utils
       fmf_filter: "tier: 1"