[Cognitive Services] Upgrade azure-mgmt-cognitiveservices to 15.0.0b1 and add managed-network commands#33132

M-Hietala wants to merge 4 commits intoAzure:devAzure/azure-cli:devfrom

M-Hietala:M-Hietala/managed-network-cleanM-Hietala/azure-cli:M-Hietala/managed-network-cleanCopy head branch name to clipboard