salt: upgrade apiserver on bootstrap first

Author: eg-ayoub

salt/metalk8s/orchestrate/apiserver.sls

@@ -1,7 +1,14 @@
 {%- set dest_version = pillar.metalk8s.cluster_version %}
 {%- set master_nodes = salt.metalk8s.minions_by_role('master') %}
+{%- set bootstrap_nodes = salt.metalk8s.minions_by_role('bootstrap') %}
 
-{%- for node in master_nodes | sort %}
+# move bootstrap nodes to beginning of list
+{%- for node in bootsrap_nodes %}
+{%- master_nodes.remove(node) %}
+{%- master_nodes.insert(0, node) %}
+{%- endfor %}
+
+{%- for node in master_nodes %}
 
 Sync {{ node }} minion:
   salt.function: