Set default version to 4.15; add feature to install olm via rpm

This commit provides few features related to that project:
- added workaround when the version file does not exists,
  so clean setup of the MicroShift  4.15 was not possible
- added a feature to setup the OLM via MicroShift RPM package [1]

[1] https://access.redhat.com/documentation/en-us/red_hat_build_of_microshift/4.15/html-single/installing/index#microshift-adding-olm-to-blueprint_microshift-embed-in-rpm-ostree

defaults/main.yaml

@@ -39,10 +39,10 @@ firewalld_rules_permament: true
 use_copr_microshift: false
 
 # The Microshift version that is available in the repository.
-microshift_version: 4.14
+microshift_version: 4.15
 
 # Default settings from /etc/microshift/config.yaml.default
-# https://github.com/openshift/microshift/blob/release-4.14/packaging/microshift/config.yaml
+# https://github.com/openshift/microshift/blob/release-4.15/packaging/microshift/config.yaml
 microshift_config:
   apiServer:
     subjectAltNames:
@@ -72,7 +72,7 @@ microshift_config:
 #    nodeIP: ""
 
 # Default settings from /etc/microshift/lvmd.yaml.default
-# https://github.com/openshift/microshift/blob/release-4.14/packaging/microshift/lvmd.yaml
+# https://github.com/openshift/microshift/blob/release-4.15/packaging/microshift/lvmd.yaml
 microshift_lmvd:
 # socket-name: /run/lvmd/lvmd.socket
  device-classes:
@@ -86,7 +86,7 @@ microshift_lmvd:
 #       - ""
 
 # Default settings from /etc/microshift/ovn.yaml.default
-# https://github.com/openshift/microshift/blob/release-4.14/packaging/microshift/ovn.yaml
+# https://github.com/openshift/microshift/blob/release-4.15/packaging/microshift/ovn.yaml
 microshift_ovn: {}
 # mtu: 1500
 
@@ -96,7 +96,10 @@ microshift_ovn: {}
 
 # Install the OLM - https://olm.operatorframework.io/
 setup_olm: false
+# Install the OLM via microshift-olm rpm package.
+microshift_olm_package: false
 # https://github.com/operator-framework/operator-lifecycle-manager/releases
+# NOTE: the olm_version is not working when microshift_olm_package is set to true.
 olm_version: "v0.28.0"
 
 # Version of the Operator SDK

tasks/microshift.yaml

@@ -24,6 +24,20 @@
   notify: Restart Microshift
   when: not use_copr_microshift
 
+- name: Check if version file exists
+  become: true
+  ansible.builtin.stat:
+    path: /var/lib/microshift/version
+  register: _microshift_version_file
+
+- name: "Create a version file if does not exists with version {{ microshift_version }}.0"
+  become: true
+  when: not _microshift_version_file.stat.exists
+  ansible.builtin.copy:
+    content: |
+      {{ microshift_version }}.0
+    dest: /var/lib/microshift/version
+
 - name: Change Microshift configuration files
   become: true
   ansible.builtin.copy:

tasks/olm.yaml

@@ -1,19 +1,42 @@
 ---
-- name: Fetch operator-sdk
-  become: true
-  ansible.builtin.uri:
-    url: https://github.com/operator-framework/operator-sdk/releases/download/{{ operator_sdk_version }}/operator-sdk_linux_amd64
-    dest: /usr/local/bin/operator-sdk
-    mode: "755"
-    status_code:
-      - 200
-      - 304
+- name: Install OLM via rpm package
+  when: microshift_olm_package
+  block:
+    - name: Install OLM rpm
+      become: true
+      ansible.builtin.yum:
+        name: microshift-olm
+        state: present
+        enablerepo: microshift-rpms,microshift-deps-rpms
+      notify: Restart Microshift
 
-- name: Check if OLM is installed
-  ansible.builtin.command: /usr/local/bin/operator-sdk olm status
-  register: olm_status
-  failed_when: olm_status.rc not in [0, 1]
-  changed_when: true
+    - name: Flush handlers
+      ansible.builtin.meta: flush_handlers
+
+- name: Install OLM via OperatorSDK
+  when: not microshift_olm_package
+  block:
+    - name: Fetch operator-sdk
+      become: true
+      ansible.builtin.uri:
+        url: https://github.com/operator-framework/operator-sdk/releases/download/{{ operator_sdk_version }}/operator-sdk_linux_amd64
+        dest: /usr/local/bin/operator-sdk
+        mode: "755"
+        status_code:
+          - 200
+          - 304
+
+    - name: Check if OLM is installed
+      ansible.builtin.command: /usr/local/bin/operator-sdk olm status
+      register: olm_status
+      failed_when: olm_status.rc not in [0, 1]
+      changed_when: true
+
+    - name: Install OLM with SDK
+      ansible.builtin.command: |
+        /usr/local/bin/operator-sdk olm install --version {{ olm_version }}
+      when: olm_status.rc != 0
+      changed_when: true
 
 # Set ns/user to SCC before we run the OLM installation
 - name: Ensure privileged SCC for OLM
@@ -24,9 +47,3 @@
     - "default"
     - "operatorhubio-catalog"
     - "olm-operator-serviceaccount"
-
-- name: Install OLM with SDK
-  ansible.builtin.command: |
-    /usr/local/bin/operator-sdk olm install --version {{ olm_version }}
-  when: olm_status.rc != 0
-  changed_when: true