CI: rework pipeline: short/extended based on labels (#11324)

* CI: reduce VM resources requests to improve scheduling

* CI: Reduce default jobs; add labels(ci-full/extended) to run more test

* CI: use jobs dependencies instead of stages

* precommit one-job

* CI: Use Kubevirt VM to run Molecule and Vagrant jobs

Vagrantfile

@@ -278,6 +278,7 @@ Vagrant.configure("2") do |config|
         "local_path_provisioner_enabled": "#{$local_path_provisioner_enabled}",
         "local_path_provisioner_claim_root": "#{$local_path_provisioner_claim_root}",
         "ansible_ssh_user": SUPPORTED_OS[$os][:user],
+        "ansible_ssh_private_key_file": File.join(Dir.home, ".vagrant.d", "insecure_private_key"),
         "unsafe_show_logs": "True"
       }