changefeedccl: enable changefeed tests on ARM

This change enables all changefeed tests on ARM except for the Kafka
OAuth test.  There are only Kafka 3 ARM binaries available, which are
internally ran via docker, but the OAuth test requires Kafka 2 for the
broker setup.

Release note: None

pkg/cmd/roachtest/cluster.go

@@ -741,7 +741,7 @@ func MachineTypeToCPUs(s string) int {
 		if _, err := fmt.Sscanf(s, "n2-standard-%d", &v); err == nil {
 			return v
 		}
-		if _, err := fmt.Sscanf(s, "n2-standard-%d", &v); err == nil {
+		if _, err := fmt.Sscanf(s, "t2a-standard-%d", &v); err == nil {
 			return v
 		}
 		if _, err := fmt.Sscanf(s, "n2-highcpu-%d", &v); err == nil {

pkg/cmd/roachtest/cluster_test.go

@@ -168,6 +168,12 @@ func TestClusterMachineType(t *testing.T) {
 		{"n2-standard-32", 32},
 		{"n2-standard-64", 64},
 		{"n2-standard-96", 96},
+		{"t2a-standard-2", 2},
+		{"t2a-standard-4", 4},
+		{"t2a-standard-8", 8},
+		{"t2a-standard-16", 16},
+		{"t2a-standard-32", 32},
+		{"t2a-standard-48", 48},
 	}
 	for _, tc := range testCases {
 		t.Run(tc.machineType, func(t *testing.T) {