[YANG SONIC-ACL] Fix Yang definition of IN_PORTS and OUT_PORTS (#16220)

How I did it
Update Yang definition of IN_PORTS and OUT_PORTS to string.
Since we cannot split the string with comma (,) and validate each substring is a valid SONiC port name. The only restriction for them is must be a string.

How to verify it
Verified by building sonic_yang_models-1.0-py3-none-any.whl. While building the target package, unit tests were run and passed.
Build a SONiC image based on 202205 branch and installed on physical DUT. Re try the steps in [Yang] Incorrect definition of IN_PORTS and OUT_PORTS in sonic-acl.yang #16190 and can see below success response:

Author: lizhijianrd

src/sonic-yang-models/tests/yang_model_tests/tests/acl.json

@@ -14,6 +14,12 @@
         "eStrKey" : "Mandatory",
         "eStr": ["ACL_RULE", "PRIORITY"]
     },
+    "ACL_RULE_WITH_VALID_IN_PORTS": {
+        "desc": "Configure ACL_RULE with valid IN_PORTS."
+    },
+    "ACL_RULE_WITH_VALID_OUT_PORTS": {
+        "desc": "Configure ACL_RULE with valid OUT_PORTS."
+    },
     "ACL_TABLE_EMPTY_PORTS": {
         "desc": "Configure ACL_TABLE with empty ports."
     },

src/sonic-yang-models/tests/yang_model_tests/tests_config/acl.json

@@ -482,6 +482,114 @@
             }
         }
     },
+    "ACL_RULE_WITH_VALID_IN_PORTS": {
+        "sonic-acl:sonic-acl": {
+            "sonic-acl:ACL_RULE": {
+                "ACL_RULE_LIST": [
+                    {
+                        "ACL_TABLE_NAME": "NO-NSW-PACL-V4",
+                        "IN_PORTS": "Ethernet0,Ethernet1",
+                        "PACKET_ACTION": "FORWARD",
+                        "PRIORITY": 9999,
+                        "RULE_NAME": "Rule_20",
+                        "SRC_IPV6": "2001::1/64"
+                    }
+                ]
+            },
+            "sonic-acl:ACL_TABLE": {
+                "ACL_TABLE_LIST": [
+                    {
+                        "ACL_TABLE_NAME": "NO-NSW-PACL-V4",
+                        "policy_desc": "Filter IPv4",
+                        "ports": [
+                            "Ethernet0",
+                            "Ethernet1"
+                        ],
+                        "stage": "INGRESS",
+                        "type": "L3"
+                    }
+                ]
+            }
+        },
+        "sonic-port:sonic-port": {
+            "sonic-port:PORT": {
+                "PORT_LIST": [
+                    {
+                        "admin_status": "up",
+                        "alias": "eth0",
+                        "description": "Ethernet0",
+                        "lanes": "0,1,2,3",
+                        "mtu": 9000,
+                        "name": "Ethernet0",
+                        "speed": 25000
+                    },
+                    {
+                        "admin_status": "up",
+                        "alias": "eth1",
+                        "description": "Ethernet1",
+                        "lanes": "4,5,6,7",
+                        "mtu": 9000,
+                        "name": "Ethernet1",
+                        "speed": 25000
+                    }
+                ]
+            }
+        }
+    },
+    "ACL_RULE_WITH_VALID_OUT_PORTS": {
+        "sonic-acl:sonic-acl": {
+            "sonic-acl:ACL_RULE": {
+                "ACL_RULE_LIST": [
+                    {
+                        "ACL_TABLE_NAME": "NO-NSW-PACL-V4",
+                        "OUT_PORTS": "Ethernet0,Ethernet1",
+                        "PACKET_ACTION": "FORWARD",
+                        "PRIORITY": 9999,
+                        "RULE_NAME": "Rule_20",
+                        "SRC_IPV6": "2001::1/64"
+                    }
+                ]
+            },
+            "sonic-acl:ACL_TABLE": {
+                "ACL_TABLE_LIST": [
+                    {
+                        "ACL_TABLE_NAME": "NO-NSW-PACL-V4",
+                        "policy_desc": "Filter IPv4",
+                        "ports": [
+                            "Ethernet0",
+                            "Ethernet1"
+                        ],
+                        "stage": "EGRESS",
+                        "type": "L3"
+                    }
+                ]
+            }
+        },
+        "sonic-port:sonic-port": {
+            "sonic-port:PORT": {
+                "PORT_LIST": [
+                    {
+                        "admin_status": "up",
+                        "alias": "eth0",
+                        "description": "Ethernet0",
+                        "lanes": "0,1,2,3",
+                        "mtu": 9000,
+                        "name": "Ethernet0",
+                        "speed": 25000
+                    },
+                    {
+                        "admin_status": "up",
+                        "alias": "eth1",
+                        "description": "Ethernet1",
+                        "lanes": "4,5,6,7",
+                        "mtu": 9000,
+                        "name": "Ethernet1",
+                        "speed": 25000
+                    }
+                ]
+            }
+        }
+    },
     "ACL_TABLE_DEFAULT_VALUE_STAGE": {
         "sonic-acl:sonic-acl": {
             "sonic-acl:ACL_TABLE": {

src/sonic-yang-models/yang-templates/sonic-acl.yang.j2

@@ -128,14 +128,14 @@ module sonic-acl {
 					}
 				}
 
-				leaf-list IN_PORTS {
-					/* Values in leaf list are UNIQUE */
-					type uint16;
+				leaf IN_PORTS {
+					/* Values is a list of SONiC port name (/port:sonic-port/port:PORT/port:PORT_LIST/port:name) joined by comma */
+					type string;
 				}
 
-				leaf-list OUT_PORTS {
-					/* Values in leaf list are UNIQUE */
-					type uint16;
+				leaf OUT_PORTS {
+					/* Values is a list of SONiC port name (/port:sonic-port/port:PORT/port:PORT_LIST/port:name) joined by comma */
+					type string;
 				}
 
 				choice src_port {