Allow registering on a http subsite with a https central site.

Currently the variable `checkmk_agent_server_protocol` is used both for downloading the agent at the central site,
and for registering the agent at the subsite, therefore making it mandatory to use http or https on both sites without mixing.

Introduces a new variable `checkmk_agent_registration_server_protocol` which defaults to `checkmk_agent_server_protocol`,
similar to the other `checkmk_agent_registration_*` variables to solve that.

roles/agent/defaults/main.yml

@@ -4,6 +4,7 @@ checkmk_agent_edition: cre
 checkmk_agent_server_protocol: http
 checkmk_agent_server: localhost
 checkmk_agent_site: mysite
+checkmk_agent_registration_server_protocol: "{{ checkmk_agent_server_protocol }}"
 checkmk_agent_registration_server: "{{ checkmk_agent_server }}"
 checkmk_agent_registration_site: "{{ checkmk_agent_site }}"
 checkmk_agent_server_validate_certs: 'true'

roles/agent/molecule/2.1.0/group_vars/all.yml

@@ -12,6 +12,7 @@ checkmk_agent_edition: "{{ checkmk_var_edition }}"
 checkmk_agent_server_protocol: http
 checkmk_agent_server: 127.0.0.1
 checkmk_agent_site: "{{ checkmk_var_checkmk_site }}"
+checkmk_agent_registration_server_protocol: "{{ checkmk_agent_server_protocol }}"
 checkmk_agent_registration_server: "{{ checkmk_agent_server }}"
 checkmk_agent_registration_site: "{{ checkmk_agent_site }}"
 checkmk_agent_server_validate_certs: 'false'

roles/agent/molecule/2.2.0/group_vars/all.yml

@@ -12,6 +12,7 @@ checkmk_agent_edition: "{{ checkmk_var_edition }}"
 checkmk_agent_server_protocol: http
 checkmk_agent_server: 127.0.0.1
 checkmk_agent_site: "{{ checkmk_var_checkmk_site }}"
+checkmk_agent_registration_server_protocol: "{{ checkmk_agent_server_protocol }}"
 checkmk_agent_registration_server: "{{ checkmk_agent_server }}"
 checkmk_agent_registration_site: "{{ checkmk_agent_site }}"
 checkmk_agent_server_validate_certs: 'false'

roles/agent/molecule/2.3.0/group_vars/all.yml

@@ -12,6 +12,7 @@ checkmk_agent_edition: "{{ checkmk_var_edition }}"
 checkmk_agent_server_protocol: http
 checkmk_agent_server: 127.0.0.1
 checkmk_agent_site: "{{ checkmk_var_checkmk_site }}"
+checkmk_agent_registration_server_protocol: "{{ checkmk_agent_server_protocol }}"
 checkmk_agent_registration_server: "{{ checkmk_agent_server }}"
 checkmk_agent_registration_site: "{{ checkmk_agent_site }}"
 checkmk_agent_server_validate_certs: 'false'

roles/agent/tasks/Linux.yml

@@ -106,7 +106,7 @@
   become: true
   ansible.builtin.shell: |
     cmk-update-agent register -H {{ checkmk_agent_host_name }} \
-    -s {{ checkmk_agent_registration_server }} -i {{ checkmk_agent_registration_site }} -p {{ checkmk_agent_server_protocol }} \
+    -s {{ checkmk_agent_registration_server }} -i {{ checkmk_agent_registration_site }} -p {{ checkmk_agent_registration_server_protocol }} \
     -U {{ checkmk_agent_user }} -P {{ __checkmk_agent_auth }}
   no_log: "{{ checkmk_agent_no_log | bool }}"
   register: __checkmk_agent_update_state
@@ -122,7 +122,7 @@
   become: true
   ansible.builtin.shell: |
     cmk-update-agent register -H {{ checkmk_agent_host_name }} \
-    -s {{ checkmk_agent_registration_server }} -i {{ checkmk_agent_registration_site }} -p {{ checkmk_agent_server_protocol }} \
+    -s {{ checkmk_agent_registration_server }} -i {{ checkmk_agent_registration_site }} -p {{ checkmk_agent_registration_server_protocol }} \
     -U {{ checkmk_agent_user }} -S {{ __checkmk_agent_auth }}
   no_log: "{{ checkmk_agent_no_log | bool }}"
   register: __checkmk_agent_update_state

roles/agent/tasks/Win32NT.yml

@@ -74,7 +74,7 @@
 - name: "{{ ansible_system }}: Register Agent for automatic Updates using Automation Secret."  # noqa no-changed-when
   ansible.windows.win_command: |
     check_mk_agent.exe updater register -H {{ checkmk_agent_host_name }} \
-    -s {{ checkmk_agent_registration_server }} -i {{ checkmk_agent_registration_site }} -p {{ checkmk_agent_server_protocol }} \
+    -s {{ checkmk_agent_registration_server }} -i {{ checkmk_agent_registration_site }} -p {{ checkmk_agent_registration_server_protocol }} \
     -U {{ checkmk_agent_user }} -S {{ __checkmk_agent_auth }}
   no_log: "{{ checkmk_agent_no_log | bool }}"
   register: __checkmk_agent_update_state