IdStory Identity Manager

Main problem occurrs on assigning new roles.

I created tests for compare progress of optimalization:

Assign 10 new roles -> 10 s
Assing 50 new roles -> 45 s
Assing 100 new roles -> 200 s
Assing 200 new roles -> 1000 s

I continued with optimalization of remove a identity-roles.

Delete is already implemented as elementary. I created performance test for delete:
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Sync / H2 DB/ Include provisioning
Remove 100 roles -> 37s
Remove 200 roles -> 150s

For remove one identity-roles was used 449 selects (includes subselects).
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This are not good results, mainly if the time for remove double of identity-roles spend four times more time.

Next optimalizations for provisioning and fix (find of overridden attributes).
- Filtering in SysRoleSystemAttributes was refactored for using a toPredicate.

Commit: https://github.com/bcvsolutions/CzechIdMng/commit/6abb601ab2fdec2189c21e2bdcffde74ae7737b2

I did next optimalization with this results:
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Sync / H2 DB/ Include provisioning
Remove 100 roles -> 12s
Remove 200 roles -> 32s

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Sync / H2 DB/ Provisioning skiped
Remove 200 roles (for identity, for on account)-> 3,7s

What was optimalized?:
- Optimalization in provisioning part (redundant selects ... ).
- Provisioning (for delete) is executed only for identity-roles with some mapped system.
- I implemented skip of provisioning to the delete identity-role processor. This skip is very useful (3,7s 32s) for situations, when we want to delete many roles for one user (on one account). In this case we can delete all identity-role with skip and only last one delete without skip.

Commit: https://github.com/bcvsolutions/CzechIdMng/commit/278cb219aaad714668659442cbbae80fdd1a11c0