Enable /plans/provision/virtual for pull requests

Let's start slowly but surely moving the full test suite execution
to pull request testing to catch problems early, prevent the
last-minute surprises and speed up the final release tasks.

.packit.yaml

@@ -43,10 +43,13 @@ jobs:
     targets:
       - fedora-all
       - epel-9
+    use_internal_tf: True
     tf_extra_params:
         test:
             tmt:
-                name: /plans/features/(core|basic)
+                # FIXME Run just the provision plan
+                # to speed up the pull request debugging
+                name: /plans/provision/virtual
 
   # Test pull requests (full)
   - job: tests

plans/provision/virtual.fmf

@@ -1,9 +1,45 @@
 summary: Virtual machine via testcloud
+
+description: |
+    Verify functionality of the virtual provision plugin. Run
+    tests which exercise various features of the testcloud plugin
+    even if not directly related to the provision implementation.
+
+    The plan takes care of fetching the image to speed up the
+    execution. Each test should consume the `PROVISION_METHODS`
+    variable and use `provision --how virtual` on their own.
+
 discover:
     how: fmf
-    filter: 'tag:virtual & tier:1 | tag:provision-virtual-only'
-provision:
-    how: virtual
-#    image: fedora
-#    memory: 2048
-#    disk: 10
+    filter: 'tag:provision-virtual'
+
+prepare+:
+  - name: required-packages
+    how: install
+    package: guestfs-tools
+
+  - name: start-libvirtd
+    script: |
+        sudo systemctl start libvirtd
+        sudo systemctl status libvirtd
+
+  - name: prepare-image
+    summary: Fetch the image, refresh dnf cache, install beakerlib
+    script: |
+        tmt run --remove plan --default provision --how virtual finish
+        for image in /var/tmp/tmt/testcloud/images/*qcow2; do
+            virt-customize --add $image --run-command 'dnf --refresh install -y beakerlib'
+        done
+
+enabled: true
+
+environment:
+    PROVISION_METHODS: virtual
+
+adjust+:
+  - provision:
+        hardware:
+            virtualization:
+                is-supported: true
+            memory: ">= 4 GB"
+    when: trigger == commit

tests/core/escaping/main.fmf

@@ -6,11 +6,7 @@ description:
 test: ./test.sh
 framework: beakerlib
 tag-: [container, virtual]
+tag+: [provision-virtual]
 
 environment:
     PROVISION_METHODS: local container
-adjust:
-  - when: how == full
-    environment:
-        PROVISION_METHODS: container virtual local
-    tag+: [additional_coverage]