[ReleasePR healthcareapis] add healthcareapis track2 config (#1454)

Create to sync Azure/azure-rest-api-specs#11946
[ReCreate this PR](https://github.com/azure-resource-manager-schemas/compare/master...AzureSDKAutomation:sdkAuto/healthcareapis?expand=1)

Author: msftbot[bot]

schemas/2018-08-20-preview/Microsoft.HealthcareApis.json

@@ -279,4 +279,4 @@
       "description": "The properties of a service instance."
     }
   }
-}
+}

schemas/2019-09-16/Microsoft.HealthcareApis.json

@@ -332,4 +332,4 @@
       "description": "The properties of a service instance."
     }
   }
-}
+}

schemas/2020-03-15/Microsoft.HealthcareApis.json

@@ -336,4 +336,4 @@
       "description": "The properties of a service instance."
     }
   }
-}
+}

schemas/2020-03-30/Microsoft.HealthcareApis.json

@@ -553,4 +553,4 @@
       "description": "Microsoft.HealthcareApis/services/privateEndpointConnections"
     }
   }
-}
+}