Install cri-o with package version (#6853)

and thereby support upgrade from e.g. 1.18.x to 1.19.y

Included OSes:
- Centos7/8
- Ubuntu18/20

New variables for overriding by default installed packages:
- centos_crio_packages
- ubuntu_crio_packages

roles/container-engine/cri-o/vars/centos-7.yml

@@ -1,5 +1,5 @@
 ---
+default_crio_packages:
+  - cri-o-1.19.0
 
-crio_packages:
-  - cri-o
-  - oci-systemd-hook
+crio_packages: "{{ centos_crio_packages | default(default_crio_packages) }}"

roles/container-engine/cri-o/vars/centos-8.yml

@@ -1,4 +1,5 @@
 ---
+default_crio_packages:
+  - cri-o-1.19.0
 
-crio_packages:
-  - cri-o
+crio_packages: "{{ centos_crio_packages | default(default_crio_packages) }}"

roles/container-engine/cri-o/vars/ubuntu.yml

@@ -1,8 +1,9 @@
 ---
+default_crio_packages:
+  - "cri-o=1.19.0~0"
+  - "cri-o-runc=1.0.0-6"
 
-crio_packages:
-  - "cri-o"
-  - "cri-o-runc"
+crio_packages: "{{ ubuntu_crio_packages | default(default_crio_packages) }}"
 
 # The crio_runtimes variable defines a list of OCI compatible runtimes.
 crio_runtimes: