Fix error on fetching throughput settings

[karanpopat]

The table rendering used to break when using the default Throughput settings and ThroughputPolicy was not set explicitly.

{
"throughput_settings": {
"AutoscaleSettingsMaxThroughput": 1000,
"AutoscaleSettingsTargetMaxThroughput": 0,
"AutoscaleSettingsThroughputPolicy": {},
"ID": "/subscriptions/abcd7416-f95f-4771-bbb5- 529d4c76659c/resourceGroups/demo/providers/Microsoft.DocumentDB/databaseAccounts/demo-insight-acc/mongodbDatabases/test-db/throughputSettings/default",
"Location": "",
"Name": "Nlrk",
"ResourceEtag": "",
"ResourceMinimumThroughput": "1000",
"ResourceOfferReplacePending": "",
"ResourceRid": "",
"ResourceThroughput": 100,
"ResourceTs": 0,
"Type": "Microsoft.DocumentDB/databaseAccounts/mongodbDatabases/throughputSettings"
}
}

Integration test logs

Logs

Add passing integration test logs here

Example query results

Results

> select throughput_settings from azure_cosmosdb_mongo_database
[
 {
  "throughput_settings": {
   "AutoscaleSettingsMaxThroughput": 1000,
   "AutoscaleSettingsTargetMaxThroughput": 0,
   "AutoscaleSettingsThroughputPolicy": {},
   "ID": "/subscriptions/abcd7416-f95f-4771-bbb5-529d4c76659c/resourceGroups/demo/providers/Microsoft.DocumentDB/databaseAccounts/demo-insight-acc/mongodbDatabases/test-db/throughputSettings/default",
   "Location": "",
   "Name": "Nlrk",
   "ResourceEtag": "",
   "ResourceMinimumThroughput": "1000",
   "ResourceOfferReplacePending": "",
   "ResourceRid": "",
   "ResourceThroughput": 100,
   "ResourceTs": 0,
   "Type": "Microsoft.DocumentDB/databaseAccounts/mongodbDatabases/throughputSettings"
  }
 }
]