ML Server Administration utility not working on fresh DSVM

### Extension name (the extension in question)
azure-ml-admin-cli

### Description of issue (in as much detail as possible)
New Windows 2016 DSVM comes with ML Server 9.3.0 preinstalled. However, running Administration Utils immediately after installation results in an error:

```
C:\Program Files (x86)\Microsoft SDKs\Azure\CLI2\wbin>cd "C:\Program Files (x86)\Microsoft SDKs\Azure\CLI2\wbin" && az ml admin --help
az: error: argument _command_package: invalid choice: ml
usage: az [-h] [--verbose] [--debug] [--output {json,jsonc,table,tsv}]
[--query JMESPATH]
{acr,acs,aks,advisor,webapp,appservice,functionapp,backup,batch,batchai,billing,cdn,cloud,cognitiveservices,configure,consumption,container,cosmosdb,dla,dls,eventgrid,extension,feedback,find,interactive,iot,keyvault,lab,monitor,network,login,logout,account,mysql,postgres,redis,reservations,group,resource,provider,feature,tag,policy,lock,managedapp,role,ad,sf,sql,storage,disk,identity,image,snapshot,vm,vmss}
...
```

VM version: microsoft-ads:windows-data-science-vm:windows2016:18.02.00

-----

C:\Program Files (x86)\Microsoft SDKs\Azure\CLI2\wbin>az --version
azure-cli (2.0.27)

acr (2.0.21)
acs (2.0.26)
advisor (0.1.2)
appservice (0.1.26)
backup (1.0.6)
batch (3.1.10)
batchai (0.1.5)
billing (0.1.7)
cdn (0.0.13)
cloud (2.0.12)
cognitiveservices (0.1.10)
command-modules-nspkg (2.0.1)
configure (2.0.14)
consumption (0.2.1)
container (0.1.18)
core (2.0.27)
cosmosdb (0.1.19)
dla (0.0.18)
dls (0.0.19)
eventgrid (0.1.10)
extension (0.0.9)
feedback (2.1.0)
find (0.2.8)
interactive (0.3.16)
iot (0.1.17)
keyvault (2.0.18)
lab (0.0.17)
monitor (0.1.2)
network (2.0.23)
nspkg (3.0.1)
profile (2.0.19)
rdbms (0.0.12)
redis (0.2.11)
reservations (0.1.1)
resource (2.0.23)
role (2.0.19)
servicefabric (0.0.10)
sql (2.0.21)
storage (2.0.25)
vm (2.0.26)

Python location 'C:\Program Files (x86)\Microsoft SDKs\Azure\CLI2\python.exe'
Extensions directory 'C:\Users\labdsvm-admin\.azure\cliextensions'

Python (Windows) 3.6.1 (v3.6.1:69c0db5, Mar 21 2017, 17:54:52) [MSC v.1900 32 bit (Intel)]

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