misc(query): Utility to convert ColumnFilters in LogicalPlan

[tjackpaul]

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Need to convert the LogicalPlan ColumnFilters to a plain java object. It is required to blacklist queries. And the operator is required to handle the user metric/label sharing policies.

Deleted the duplicate LogicalPlanUtil in Query module and moved that to LogicalPlanUtils in coordinator module itself.

[TanviBhavsar]

Looks good to me!

[velvia]

Looks fine for the most part.... I think it belongs better in query module not coordinator (ie it should live next to LogicalPlan itself -- or instead of Utils just put it in the LogicalPlan object)

[tjackpaul]

Looks fine for the most part.... I think it belongs better in query module not coordinator (ie it should live next to LogicalPlan itself -- or instead of Utils just put it in the LogicalPlan object)

Unfortunately we can't move due to the dependency hierarchy. Few of the classes that it depends on belongs to coordinator module only and query does not depend upon coordinator, it is the other way.