Allow for configuration of quotas in terabytes

At some point between cf6 and cf7 this stopped working. Configuring
memory quotas in TB is especially useful for configuring org quotas in
large foundations.

command/flag/megabytes.go

@@ -10,7 +10,7 @@ import (
 )
 
 const (
-	AllowedUnits = "mg"
+	AllowedUnits = "mgt"
 )
 
 type Megabytes struct {

command/flag/megabytes_test.go

@@ -47,6 +47,22 @@ var _ = Describe("Megabytes", func() {
 			})
 		})
 
+		When("the suffix is T", func() {
+			It("interprets the number as terabytes", func() {
+				err := megabytes.UnmarshalFlag("2T")
+				Expect(err).ToNot(HaveOccurred())
+				Expect(megabytes.Value).To(BeEquivalentTo(2097152))
+			})
+		})
+
+		When("the suffix is TB", func() {
+			It("interprets the number as terabytes", func() {
+				err := megabytes.UnmarshalFlag("3TB")
+				Expect(err).ToNot(HaveOccurred())
+				Expect(megabytes.Value).To(BeEquivalentTo(3145728))
+			})
+		})
+
 		When("the suffix is lowercase", func() {
 			It("is case insensitive", func() {
 				err := megabytes.UnmarshalFlag("7m")