Support floating point number values for disk_quota and memory

Fixes #3546

api/payloads/manifest.go

@@ -256,7 +256,7 @@ func (s ManifestApplicationService) Validate() error {
 	return validation.ValidateStruct(&s, validation.Field(&s.Name, validation.Required))
 }
 
-var unitAmount = regexp.MustCompile(`^\d+(?:B|K|KB|M|m|MB|mb|G|g|GB|gb|T|t|TB|tb)$`)
+var unitAmount = regexp.MustCompile(`^\d+(?:\.\d+)?(?:B|K|KB|M|m|MB|mb|G|g|GB|gb|T|t|TB|tb)$`)
 
 func validateAmountWithUnit(value any) error {
 	v, isNil := validation.Indirect(value)

api/payloads/manifest_test.go

@@ -123,6 +123,16 @@ var _ = Describe("Manifest payload", func() {
 				})
 			})
 
+			When("the disk quota is a floating point number", func() {
+				BeforeEach(func() {
+					testManifest.DiskQuota = tools.PtrTo("1.5G")
+				})
+
+				It("does not return a validation error", func() {
+					Expect(validateErr).NotTo(HaveOccurred())
+				})
+			})
+
 			When("the alt disk quota doesn't supply a unit", func() {
 				BeforeEach(func() {
 					testManifest.AltDiskQuota = tools.PtrTo("1024")
@@ -204,6 +214,16 @@ var _ = Describe("Manifest payload", func() {
 				})
 			})
 
+			When("the memory is a floating point number", func() {
+				BeforeEach(func() {
+					testManifest.Memory = tools.PtrTo("0.5G")
+				})
+
+				It("does not return a validation error", func() {
+					Expect(validateErr).NotTo(HaveOccurred())
+				})
+			})
+
 			When("random-route and default-route flags are both set", func() {
 				BeforeEach(func() {
 					testManifest.DefaultRoute = true
@@ -436,6 +456,16 @@ var _ = Describe("Manifest payload", func() {
 				})
 			})
 
+			When("the disk quota is a floating point number", func() {
+				BeforeEach(func() {
+					testManifestProcess.DiskQuota = tools.PtrTo("1.5G")
+				})
+
+				It("does not return a validation error", func() {
+					Expect(validateErr).NotTo(HaveOccurred())
+				})
+			})
+
 			When("the alt disk quota doesn't supply a unit", func() {
 				BeforeEach(func() {
 					testManifestProcess.AltDiskQuota = tools.PtrTo("1024")
@@ -517,6 +547,16 @@ var _ = Describe("Manifest payload", func() {
 				})
 			})
 
+			When("the memory is a floating point number", func() {
+				BeforeEach(func() {
+					testManifestProcess.Memory = tools.PtrTo("0.5G")
+				})
+
+				It("does not return a validation error", func() {
+					Expect(validateErr).NotTo(HaveOccurred())
+				})
+			})
+
 			When("Timeout is not positive", func() {
 				BeforeEach(func() {
 					testManifestProcess.Timeout = tools.PtrTo(int32(0))