update default network config and set mac addr tolower

circle/vm/models/instance.py

@@ -104,12 +104,11 @@ chpasswd:
 """.strip()
 
 CI_NETWORK_CONFIG_DEF = """
-network:
-  version: 2
-  ethernets:
+version: 2
+ethernets:
   ens3:
     match:
-        macaddress: {{ net.mac }}
+      macaddress: '{{ net.mac }}'
     addresses: 
       - {{ net.ipv4 }}/{{ net.mask4 }}
     gateway4: {{ net.gateway4 }}
@@ -319,13 +318,13 @@ class NetTemplate:
             self.name = str(net.vlan.name)
             self.gateway4 = str(net.vlan.network4).split("/")[0]
             self.mask4 = str(net.vlan.network4).split("/")[1]
-            self.mac = str(net.host.mac)
+            self.mac = str(net.host.mac).lower()
 
     def __init__(self, instance):
         self.vlans = list(NetTemplate.Host(net) for net in instance.interface_set.all() if net.host)
         self.ipv4 = str(instance.ipv4)
         self.ipv6 = str(instance.ipv6)
-        self.mac = str(instance.mac)
+        self.mac = str(instance.mac).lower()
         if instance.primary_host:
             addr = str(instance.primary_host.vlan.network4).split("/")
             self.gateway4 = addr[0]