add params

Author: David Kline

pipelines/packageupmpublic.yaml

@@ -3,6 +3,14 @@
 variables:
 - template: config/settings.yml
 
+parameters:
+- name: IsPreview
+  type: boolean
+  default: false
+- name: BuildNumber
+  type: int
+  default: 0
+
 jobs:
 - job: UPMPublicRelease
   timeoutInMinutes: 30