feature(Cloud Databases): Group scaling

[alexhemard]

Add support for scaling database resources by group ID See: https://cloud.ibm.com/apidocs/cloud-databases-api/cloud-databases-api-v5#setdeploymentscalinggroup

• Adds a TypeSet group that specifies resource scaling values per group

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Relates OR Closes #0000

Output from acceptance testing:

$ make testacc TESTARGS='-run=TestAccIBMDatabaseInstance'
...
--- PASS: TestAccIBMDatabaseInstanceMongodbBasic (1289.33s)
--- PASS: TestAccIBMDatabaseInstancePostgresBasic (2474.62s)
--- PASS: TestAccIBMDatabaseInstancePostgresGroup (2479.23s)
--- PASS: TestAccIBMDatabaseInstancePostgresNode (1988.01s)
--- PASS: TestAccIBMDatabaseInstance_Cassandra_Group (6696.65s)
--- PASS: TestAccIBMDatabaseInstance_Cassandra_Node (6569.76s)
--- PASS: TestAccIBMDatabaseInstance_Elasticsearch_Basic (1145.72s)
--- PASS: TestAccIBMDatabaseInstance_Elasticsearch_Group (1209.88s)
--- PASS: TestAccIBMDatabaseInstance_Elasticsearch_Node (2707.04s)
--- PASS: TestAccIBMDatabaseInstance_Etcd_Basic (935.39s)
--- PASS: TestAccIBMDatabaseInstance_Rabbitmq_Basic (963.79s)
--- PASS: TestAccIBMDatabaseInstance_Redis_Basic (866.89s)
...

[hkantare]

Once we provisioned we should set in Read Method ? Can we Read and set back ?

[hkantare]

For group do we have MaxItems limit?

[alexhemard]

Once we provisioned we should set in Read Method ? Can we Read and set back ?

The groups attribute will be updated with the new values after Read. The group attribute should be used for setting values of the scaling request.

For group do we have MaxItems limit?

Like the groups attribute, there is no MaxItems limit, but group_ids must be valid and unique. This is validated in the CustomizeDiff function