[barefoot]: Update yang models for DPB support

src/sonic-yang-models/yang-models/sonic-crm.yang

@@ -293,6 +293,66 @@ module sonic-crm {
                     type threshold;
                 }
 
+                leaf dnat_entry_threshold_type {
+                    must "(((current()='PERCENTAGE' or current()='percentage') and
+                        ../dnat_entry_high_threshold<100 and
+                        ../dnat_entry_low_threshold<100) or
+                        (current()!='PERCENTAGE' and current()!='percentage'))";
+                    type stypes:crm_threshold_type;
+                }
+
+                leaf dnat_entry_high_threshold {
+                    must "(current() > ../dnat_entry_low_threshold)"
+                    {
+                        error-message "high_threshold should be more that low_threshold";
+                    }
+                    type threshold;
+                }
+
+                leaf dnat_entry_low_threshold {
+                    type threshold;
+                }
+
+                leaf snat_entry_threshold_type {
+                    must "(((current()='PERCENTAGE' or current()='percentage') and
+                        ../snat_entry_high_threshold<100 and
+                        ../snat_entry_low_threshold<100) or
+                        (current()!='PERCENTAGE' and current()!='percentage'))";
+                    type stypes:crm_threshold_type;
+                }
+
+                leaf snat_entry_high_threshold {
+                    must "(current() > ../snat_entry_low_threshold)"
+                    {
+                        error-message "high_threshold should be more that low_threshold";
+                    }
+                    type threshold;
+                }
+
+                leaf snat_entry_low_threshold {
+                    type threshold;
+                }
+
+                leaf ipmc_entry_threshold_type {
+                    must "(((current()='PERCENTAGE' or current()='percentage') and
+                        ../ipmc_entry_high_threshold<100 and
+                        ../ipmc_entry_low_threshold<100) or
+                        (current()!='PERCENTAGE' and current()!='percentage'))";
+                    type stypes:crm_threshold_type;
+                }
+
+                leaf ipmc_entry_high_threshold {
+                    must "(current() > ../ipmc_entry_low_threshold)"
+                    {
+                        error-message "high_threshold should be more that low_threshold";
+                    }
+                    type threshold;
+                }
+
+                leaf ipmc_entry_low_threshold {
+                    type threshold;
+                }
+
             }
             /* end of Config */
         }

src/sonic-yang-models/yang-models/sonic-device_metadata.yang

@@ -89,6 +89,30 @@ module sonic-device_metadata {
                         pattern "ToRRouter|LeafRouter|SpineChassisFrontendRouter|ChassisBackendRouter|ASIC";
                     }
                 }
+
+                leaf buffer_model {
+                    type string {
+                        length 1..255;
+                    }
+                }
+
+                leaf region {
+                    type string {
+                        length 1..255;
+                    }
+                }
+
+                leaf cloudtype {
+                    type string {
+                        length 1..255;
+                    }
+                }
+
+                leaf synchronous_mode {
+                    type string {
+                        length 1..255;
+                    }
+                }
             }
             /* end of container localhost */
         }

src/sonic-yang-models/yang-models/sonic-port_qos_map.yang

@@ -0,0 +1,90 @@
+module sonic-port_qos_map {
+
+	yang-version 1.1;
+
+	namespace "http://github.com/Azure/sonic-port_qos_map";
+	prefix port_qos_map;
+
+	import sonic-types {
+		prefix stypes;
+		revision-date 2019-07-01;
+	}
+
+	import sonic-port {
+		prefix port;
+		revision-date 2019-07-01;
+	}
+
+	import sonic-extension {
+		prefix ext;
+		revision-date 2019-07-01;
+	}
+
+	description "PORT_QOS_MAP yang Module for SONiC OS";
+
+	revision 2019-07-01 {
+		description "First Revision";
+	}
+
+	container sonic-port_qos_map {
+
+		container PORT_QOS_MAP {
+
+			description "PORT_QOS_MAP part of config_db.json";
+
+			list PORT_QOS_MAP_LIST {
+
+				key "port_name";
+
+				ext:key-regex-configdb-to-yang "^(Ethernet[0-9]+)$";
+
+				ext:key-regex-yang-to-configdb "<port_name>";
+
+				leaf port_name {
+					type leafref {
+						path /port:sonic-port/port:PORT/port:PORT_LIST/port:port_name;
+					}
+				}
+
+				leaf dscp_to_tc_map {
+					type string {
+						length 1..128;
+					}
+				}
+
+				leaf tc_to_queue_map {
+					type string {
+						length 1..128;
+					}
+				}
+
+				leaf tc_to_pg_map {
+					type string {
+						length 1..128;
+					}
+				}
+
+				leaf pfc_to_queue_map {
+					type string {
+						length 1..128;
+					}
+				}
+
+				leaf pfc_to_pg_map {
+					type string {
+						length 1..128;
+					}
+				}
+
+				leaf pfc_enable {
+					type string {
+						length 1..128;
+					}
+				}
+			} /* end of list PORT_QOS_MAP_LIST */
+
+		} /* end of container PORT_QOS_MAP */
+
+	} /* end of container sonic-port_qos_map */
+
+} /* end of module sonic-port_qos_map */