No valid category tag added for Elasticsearch DA

[ocofaigh]

There needs to be a valid category tag added in ibm_catalog.json. For list of valid tags, you can run ibmcloud catalog filter options --all

Looks like databases needs to be updated to database:

[Aayush-Abhyarthi]

#129

[ocofaigh]

Looks like there is a bug in catalog, it also doesn't allow database. I had to go with data_management in #130