Adding price info for c3d

(Price for preemptible instances is calculated as: (Spot price / On-demand price) * instance prices)

cluster-autoscaler/cloudprovider/gce/gce_price_info.go

@@ -74,6 +74,7 @@ var (
 		"c2":  0.03398,
 		"c2d": 0.029563,
 		"c3":  0.03398,
+		"c3d": 0.02956,
 		"e2":  0.021811,
 		"m1":  0.0348,
 		"n1":  0.031611,
@@ -87,6 +88,7 @@ var (
 		"c2":  0.00455,
 		"c2d": 0.003959,
 		"c3":  0.00456,
+		"c3d": 0.003956,
 		"e2":  0.002923,
 		"m1":  0.0051,
 		"n1":  0.004237,
@@ -100,6 +102,7 @@ var (
 		"c2":  0.00822 / 0.03398,
 		"c2d": 0.007154 / 0.029563,
 		"c3":  0.003086 / 0.03398,
+		"c3d": 0.011825 / 0.02956,
 		"e2":  0.006543 / 0.021811,
 		"m1":  0.00733 / 0.0348,
 		"n1":  0.006655 / 0.031611,
@@ -192,6 +195,30 @@ var (
 		"c3-highcpu-44":    1.8964,
 		"c3-highcpu-88":    3.7928,
 		"c3-highcpu-176":   7.5856,
+		"c3d-standard-4":   0.1816,
+		"c3d-standard-8":   0.3632,
+		"c3d-standard-16":  0.7264,
+		"c3d-standard-30":  1.362,
+		"c3d-standard-60":  2.724,
+		"c3d-standard-90":  4.086,
+		"c3d-standard-180": 8.172,
+		"c3d-standard-360": 16.344,
+		"c3d-highmem-4":    0.24496,
+		"c3d-highmem-8":    0.48992,
+		"c3d-highmem-16":   0.97984,
+		"c3d-highmem-30":   1.8372,
+		"c3d-highmem-60":   3.6744,
+		"c3d-highmem-90":   5.5116,
+		"c3d-highmem-180":  11.0232,
+		"c3d-highmem-360":  22.0464,
+		"c3d-highcpu-4":    0.14992,
+		"c3d-highcpu-8":    0.29984,
+		"c3d-highcpu-16":   0.59968,
+		"c3d-highcpu-30":   1.1244,
+		"c3d-highcpu-60":   2.2488,
+		"c3d-highcpu-90":   3.3732,
+		"c3d-highcpu-180":  6.7464,
+		"c3d-highcpu-360":  13.4928,
 		"e2-highcpu-2":     0.04947,
 		"e2-highcpu-4":     0.09894,
 		"e2-highcpu-8":     0.19788,