fix typo classes:

Change-Id: Ia7ceba336c5476b2cb18de3e3b2d57e16bf2477b
diff --git a/classes/cluster/aaa_ha_freeipa/infra/config.yml b/classes/cluster/aaa_ha_freeipa/infra/config.yml
index c993809..db08a65 100644
--- a/classes/cluster/aaa_ha_freeipa/infra/config.yml
+++ b/classes/cluster/aaa_ha_freeipa/infra/config.yml
@@ -1,4 +1,4 @@
-alasses:
+classes:
 - system.linux.system.repo.ubuntu
 - system.openssh.client.lab
 - system.salt.master.pkg
diff --git a/classes/cluster/k8s_aio_calico/infra/config.yml b/classes/cluster/k8s_aio_calico/infra/config.yml
index c8f630f..fe16242 100644
--- a/classes/cluster/k8s_aio_calico/infra/config.yml
+++ b/classes/cluster/k8s_aio_calico/infra/config.yml
@@ -1,4 +1,4 @@
-alasses:
+classes:
 - system.linux.system.repo.ubuntu
 - system.openssh.client.lab
 - system.salt.master.pkg
diff --git a/classes/cluster/k8s_aio_contrail/infra/init.yml b/classes/cluster/k8s_aio_contrail/infra/init.yml
index 734adf9..199beba 100644
--- a/classes/cluster/k8s_aio_contrail/infra/init.yml
+++ b/classes/cluster/k8s_aio_contrail/infra/init.yml
@@ -1,4 +1,4 @@
-alasses:
+classes:
 - system.linux.system.single
 - system.linux.system.repo.mcp.extra
 - system.linux.system.repo.mcp.salt