Require pytest, do not require databases on Fedora

Database were used by bind-sdb only, which is not built on Fedora
anymore. There are still some bind-dlz-* plugins, but even Postgresql is
not used anymore.

Sanity/named/Run-internal-BIND-test-suite/main.fmf

@@ -3,7 +3,6 @@ description: |
     Bug summary: Run internal BIND test suite
     Bugzilla link: https://bugzilla.redhat.com/show_bug.cgi?id=642970
 
-     
 contact: Petr Sklenar <psklenar@redhat.com>
 test: ./runtest.sh
 framework: beakerlib
@@ -22,7 +21,6 @@ recommend:
   - libidn2-devel
   - libxml2-devel
   - openldap-devel
-  - postgresql-devel
   - sqlite-devel
   - krb5-devel
   - net-tools
@@ -48,9 +46,17 @@ adjust+:
       - kyua
     when: distro < fedora-37 or distro <= rhel-9 or distro <= centos-9
     because: only bind <=9.16 uses kyua for unit tests
+  - recommend+:
+      - postgresql-devel
+    when: component == bind and distro < fedora-33 or distro < rhel-9 or distro < centos-9
+    because: only bind-sdb in bind <=9.11 needs those databases
   - recommend+:
       - libidn-devel
     when: distro < rhel-8 or distro < centos-8
+  - recommend+:
+      - python3-pytest
+    when: distro >= fedora-39 or distro >= rhel-9 or distro >= centos-9
+    because: bind 9.18+ uses it to run tests
 duration: 14h
 enabled: true
 tag: