add a set_fact when guacamole version is 1.5.4 and debian OS

it's will set a environment to permit compile guacamole

if the env is enable on old version (like 1.5.3), it's failed to compile
sadly it's produce a warning on ansible-playbook :
```
[WARNING]: could not parse environment value, skipping: ['{{ guacamole_compile_environment | default(omit) }}']
```

tasks/install.yml

@@ -25,13 +25,17 @@
   become: true
   register: _guacamole_config_server_build
   when: not _guacamole_server_installed['stat']['exists'] or extract.changed
+  # Workarround for this bug in 1.5.4 : https://lists.apache.org/thread/h5zql3zdov0ngh8kp9r3yppcprq5z1jf
+  environment: "{{ guacamole_compile_environment | default(omit) }}"
 
 - name: install | Compiling Guacamole Server # noqa no-handler
   community.general.make:
     chdir: "{{ guacamole_src_dir + '/guacamole-server-' + guacamole_version }}"
   become: true
   register: _guacamole_server_compiled
   when: _guacamole_config_server_build['changed']
+  # Workarround for this bug in 1.5.4 : https://lists.apache.org/thread/h5zql3zdov0ngh8kp9r3yppcprq5z1jf
+  environment: "{{ guacamole_compile_environment | default(omit) }}"
 
 - name: install | Installing Guacamole Server # noqa no-handler
   community.general.make:

tasks/set_facts.yml

@@ -178,3 +178,12 @@
       - uuid-devel
   when:
     - ansible_os_family == "RedHat"
+
+- name: set_facts | Fix guacamole 1.5.4 compile issue
+  ansible.builtin.set_fact:
+    guacamole_compile_environment:
+      LDFLAGS: '-lrt'
+  when:
+    - ansible_distribution == "Debian"
+    - ansible_distribution_version is version('9', '>=')
+    - guacamole_version == "1.5.4"