Install jq/yq for more readable tests in tmt test suite

docs/contribute.rst

@@ -67,7 +67,7 @@ In order to experiment, play with the latest bits and develop
 improvements it is best to use a virtual environment. Make sure
 that you have all required packages installed on your box::
 
-    sudo dnf install gcc make git python3-docutils {python3,libvirt,krb5,libpq}-devel
+    sudo dnf install gcc make git python3-docutils {python3,libvirt,krb5,libpq}-devel jq
 
 In case you're using Centos Stream 9 system you need to enable CRB
 repository first to make all the necessary packages available::

plans/features/main.fmf

@@ -0,0 +1,15 @@
+prepare+:
+  # Install jq and yq for cleaner tests
+  - how: install
+    package:
+      - jq
+      - python3-pip
+
+  - how: shell
+    script:
+      # Try to install into .local first, if that fails, try without --user.
+      # In the sane world, tmt would be running in a virtualenv, and we'd
+      # install yq there. Otherwise, we'd change system packages, but we'd
+      # have to run as root to do that, and who's running tmt test suite
+      # as root?
+      - pip3 install --user yq || pip3 install yq

setup.py

@@ -75,7 +75,8 @@
         'python-coveralls',
         'requre',
         'pre-commit',
-        'mypy'
+        'mypy',
+        'yq'
         ],
     'provision': ['testcloud>=0.8.2'],
     'convert': [