Adding support for SLES15.4 in Avahi (#1219)

* Adding support for SLES15.4 in Avahi

* Update salt/default/avahi.sls

Co-authored-by: Julio González Gil <juliogonzalez@users.noreply.github.com>

Co-authored-by: Julio González Gil <juliogonzalez@users.noreply.github.com>

salt/default/avahi.sls

@@ -3,8 +3,8 @@ include:
 
 {% if grains['use_avahi'] and grains.get('osmajorrelease', None) != None %}
 
-# TODO: remove the following state when fix to bsc#1163683 is applied to all the SLES <= SLES15SP3
-{% if grains['osfullname'] == 'SLES' and grains['osrelease'] != '15.4' %}
+# TODO: remove the following state when fix to bsc#1163683 is applied to all the SLES <= SLES15SP4
+{% if grains['osfullname'] == 'SLES' and grains['osrelease'] != '15.5' %}
 custom_avahi_repo:
   pkgrepo.managed:
     - humanname: custom_avahi_repo
@@ -24,6 +24,8 @@ custom_avahi_repo:
     - baseurl: http://download.opensuse.org/repositories/systemsmanagement:/sumaform:/tools:/avahi:/0.7/SLE_15_SP2/
     {% elif grains['osrelease'] == '15.3' %}
     - baseurl: http://download.opensuse.org/repositories/systemsmanagement:/sumaform:/tools:/avahi:/0.7/SLE_15_SP3/
+    {% elif grains['osrelease'] == '15.4' %}
+    - baseurl: http://download.opensuse.org/repositories/systemsmanagement:/sumaform:/tools:/avahi:/0.7/SLE_15_SP4/
     {% endif %}
     - refresh: True
     - priority: 95