Update format of mdt_size to match what lvm uses

Author: JohnGarbutt

internal/pkg/pfsprovider/ansible/ansible.go

@@ -84,7 +84,7 @@ func getInventory(fsType FSType, volume registry.Volume, brickAllocations []regi
 			"mgsnode":     mgsnode,
 			"client_port": fmt.Sprintf("%d", volume.ClientPort),
 			"lnet_suffix": getLnetSuffix(),
-			"mdt_size":    fmt.Sprintf("%dGB", getMdtSize()),
+			"mdt_size":    fmt.Sprintf("%dg", getMdtSize()),
 		},
 		Hosts: hosts,
 	}

internal/pkg/pfsprovider/ansible/ansible_test.go

@@ -39,7 +39,7 @@ func TestPlugin_GetInventory(t *testing.T) {
       vars:
         abcdefgh_client_port: "10002"
         lnet_suffix: ""
-        abcdefgh_mdt_size: 20GB
+        abcdefgh_mdt_size: 20g
         abcdefgh_mgsnode: dac1
 `
 	assert.Equal(t, expected, result)
@@ -66,7 +66,7 @@ func TestPlugin_GetInventory_withNoOstOnOneHost(t *testing.T) {
       vars:
         abcdefgh_client_port: "10002"
         lnet_suffix: ""
-        abcdefgh_mdt_size: 20GB
+        abcdefgh_mdt_size: 20g
         abcdefgh_mgsnode: dac1
 `
 	assert.Equal(t, expected, result)
@@ -205,7 +205,7 @@ func TestPlugin_GetInventory_MaxMDT(t *testing.T) {
       vars:
         abcdefgh_client_port: "10002"
         lnet_suffix: ""
-        abcdefgh_mdt_size: 20GB
+        abcdefgh_mdt_size: 20g
         abcdefgh_mgsnode: dac1
 `
 	assert.Equal(t, expected, result)