Change dbname declaration in spark.catalog.exists

[souravbaner-da]

Close #858

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[GeekSheikh]

@souravbaner-da -- test is failing

https://github.com/databrickslabs/overwatch/blob/5337cadd510f596b03914ea48066db0f5df21641/src/test/scala/com/databricks/labs/overwatch/pipeline/InitializeTest.scala#L39-L53

https://github.com/databrickslabs/overwatch/blob/5337cadd510f596b03914ea48066db0f5df21641/src/test/scala/com/databricks/labs/overwatch/pipeline/InitializeTest.scala#L239-L247

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0.0% Duplication

[souravbaner-da]

Currently this issue will be on hold. As the suggested solution depend on spark version. Specifically from spark version 3.3.0 the solution is working fine and for all other version the solution is failing. Only solution for this is to check spark version during the check of database exist and build our solution depend on the spark version. May be look into it in future release.

For now in overwatch public doc we will mention that database name in config should not contain any special character. Corresponding PR for the documentation is https://github.com/databrickslabs/overwatch/pull/875

[souravbaner-da]

Currently this PR is on hold. Will start working on this after we are done with below issue #858

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