Docker group selection dropdown becomes almost unusable when list of items is long

[sidoruka]

Describe the bug When a list of items in the docker groups selection dialog is long - it's almost impossible to use a search feature, as the list hides immediately

To Reproduce Steps to reproduce the behavior:

1. Open any form, which offers a docker group selection (e.g. pipeline configuration or a docker commit dialog)
2. Start typing the group name in the search box
3. List of items hides

Expected behavior A list of the docker groups shall not hide. It's ok to reuse the same behavior, as we have in the tools registry - when the list does not hide, until explicitly close (ESC or click somewhere)

Environment:

• Cloud Provider: AWS
• Version: 0.16.0.4069.7b419b6fd46fc35404d6d9400012a2fc417a0534
• Browser: Chrome

[rodichenko]

@sidoruka fixed, backported to release/0.15 via 13b97083e2b65b16053004edffab46e767c8b8f4

[sidoruka]

@rodichenko - now I can't scroll the list of the groups, if the list overflows the screen height

[rodichenko]

@sidoruka scrolling fixed, backported to release/0.15

[NShaforostov]

Verified