balin02{5-6}: Add host configurations

Refs. sysadm-environment#5367

cea/configs/balin025.yaml

+---
+HOSTNAME: balin025
+
+# PCI Express cards
+INTERFACE1_NAME: ens10f0np0
+INTERFACE2_NAME: ens10f1np1
+
+# Onboard cards
+# INTERFACE1_NAME: eno1np0
+# INTERFACE2_NAME" eno2np1
+
+VLANS:
+  "2":
+    ADDRESS: 10.25.1.45/24
+    NETMASK: 255.255.255.0
+    DESCRIPTION: Ceph client VLAN
+  "3":
+    ADDRESS: 10.25.2.25/24
+    DESCRIPTION: Ceph cluster VLAN
+
+NAMESERVER: 10.25.6.254
+
+BOND0_ADDRESS: 10.25.6.45/24
+BOND0_GATEWAY: 10.25.6.254
+
+PARTMAN_METHOD: lvm
+BOOT_DISK_ID_PATTERN: wwn-0x600062B20DDE4D002E2A9D298F3BA53D
+
+NTP_SERVER: time.partenaires.cea.fr

cea/configs/balin026.yaml

+---
+HOSTNAME: balin026
+
+# PCI Express cards
+INTERFACE1_NAME: ens10f0np0
+INTERFACE2_NAME: ens10f1np1
+
+# Onboard cards
+# INTERFACE1_NAME: eno1np0
+# INTERFACE2_NAME" eno2np1
+
+VLANS:
+  "2":
+    ADDRESS: 10.25.1.46/24
+    NETMASK: 255.255.255.0
+    DESCRIPTION: Ceph client VLAN
+  "3":
+    ADDRESS: 10.25.2.26/24
+    DESCRIPTION: Ceph cluster VLAN
+
+NAMESERVER: 10.25.6.254
+
+BOND0_ADDRESS: 10.25.6.46/24
+BOND0_GATEWAY: 10.25.6.254
+
+PARTMAN_METHOD: lvm
+BOOT_DISK_ID_PATTERN: wwn-0x600062B20DDF52802E2A9E4A48548D98
+
+NTP_SERVER: time.partenaires.cea.fr