[Storage] --if-modified-since precision only up to minute #1563
Description
As you can see I passed a date time with precision to seconds below and get error.
C:\tmp>az storage container metadata update -n hasontestsetacl --metadata "a=1 b=2 c=3" --if-modified-since 2018-01-01T00:00:00Z
usage: az storage container metadata update [-h]
[--output {json,tsv,list,table,jsonc}]
[--verbose] [--debug]
[--query JMESPATH]
[--timeout TIMEOUT]
[--metadata METADATA [METADATA ...]]
[--if-modified-since IF_MODIFIED_SINCE]
[--sas-token SAS_TOKEN]
[--account-name ACCOUNT_NAME]
--name CONTAINER_NAME
[--account-key ACCOUNT_KEY]
[--lease-id LEASE_ID]
[--connection-string CONNECTION_STRING]
az storage container metadata update: error: argument --if-modified-since: invalid datetime_type value: '2018-01-01T00:00:00Z'