message: add missing alertsmanagement packages to Go SDK
diff: @@ -13,7 +13,9 @@ go:
  ``` yaml $(go) && $(multiapi)
  batch:
  - tag: package-preview-2019-05
  + - tag: package-2019-03
  - tag: package-2018-05
  + - tag: package-2018-05-preview
  ```
  ### Tag: package-preview-2019-05 and go
  @@ -25,6 +27,15 @@ Please also specify `--go-sdk-folder=<path to the root directory of your azure-s
  output-folder: $(go-sdk-folder)/services/preview/$(namespace)/mgmt/2019-05-05/$(namespace)
  ```
  +### Tag: package-2019-03 and go
  +
  +These settings apply only when `--tag=package-2019-03 --go` is specified on the command line.
  +Please also specify `--go-sdk-folder=<path to the root directory of your azure-sdk-for-go clone>`.
  +
  +``` yaml $(tag) == 'package-2019-03' && $(go)
  +output-folder: $(go-sdk-folder)/services/$(namespace)/mgmt/2019-03-01/$(namespace)
  +```
  +
  ### Tag: package-2018-05 and go
  These settings apply only when `--tag=package-2018-05 --go` is specified on the command line.
  @@ -33,3 +44,12 @@ Please also specify `--go-sdk-folder=<path to the root directory of your azure-s
  ``` yaml $(tag) == 'package-2018-05' && $(go)
  output-folder: $(go-sdk-folder)/services/$(namespace)/mgmt/2018-05-05/$(namespace)
  ```
  +
  +### Tag: package-2018-05-preview and go
  +
  +These settings apply only when `--tag=package-2018-05-preview --go` is specified on the command line.
  +Please also specify `--go-sdk-folder=<path to the root directory of your azure-sdk-for-go clone>`.
  +
  +``` yaml $(tag) == 'package-2018-05-preview' && $(go)
  +output-folder: $(go-sdk-folder)/services/preview/$(namespace)/mgmt/2018-05-05-preview/$(namespace)
  +```
  