ATLAS-5227: Support disabling composite index

[pinal-shah]

What changes were proposed in this pull request?

This patch handles the support to make any model attribute to isIndexable=false.
Discovered below attributes which are indexed

• ddl.queryText
• spark_process.queryText

How was this patch tested?

• This patch was tested by adding the TYPEDEF patch for 'rdbms_column.type' to indexable=false
• Below is the example of the typeDef patch to update ddl.queryText attribute
  { "patches": [ { "id": "TYPEDEF_PATCH_0008_001", "description": "Updating isIndexable to False for ddl_index attribute in BaseModel", "action": "UPDATE_ATTRIBUTE_METADATA", "typeName": "ddl", "applyToVersion": "1.0", "updateToVersion": "1.1", "attributeName": "queryText", "params": { "isIndexable": false } } ] }
• It was tested against both the backend, hbase and postgres