kubernetes: Fix regression in sidebar layout
kubernetes: Fix regression in sidebar layout

With the new Patternfly in 09189397042c9f6fcc6db5024aa3282cc5cb16e7
the layout for the kubernetes sidebar broke. This should fix
the padding.

Closes #7900

SotolitoLabs/cockpit,martinpitt/cockpit,stefwalter/cockpit,cockpituous/cockpit,Scribery/cockpit,Scribery/cockpit,mareklibra/cockpit,martinpitt/cockpit,deryni/cockpit,mareklibra/cockpit,cockpituous/cockpit,cockpituous/cockpit,SotolitoLabs/cockpit,deryni/cockpit,stefwalter/cockpit,stefwalter/cockpit,deryni/cockpit,petervo/cockpit,andreasn/cockpit,petervo/cockpit,petervo/cockpit,deryni/cockpit,andreasn/cockpit,martinpitt/cockpit,moraleslazaro/cockpit,petervo/cockpit,mvollmer/cockpit,cockpit-project/cockpit,mvollmer/cockpit,mvollmer/cockpit,moraleslazaro/cockpit,moraleslazaro/cockpit,andreasn/cockpit,moraleslazaro/cockpit,stefwalter/cockpit,andreasn/cockpit,SotolitoLabs/cockpit,mareklibra/cockpit,garrett/cockpit,andreasn/cockpit,moraleslazaro/cockpit,cockpituous/cockpit,Scribery/cockpit,stefwalter/cockpit,Scribery/cockpit,SotolitoLabs/cockpit,cockpituous/cockpit,mareklibra/cockpit,stefwalter/cockpit,cockpit-project/cockpit,cockpituous/cockpit,mareklibra/cockpit,deryni/cockpit,mareklibra/cockpit,petervo/cockpit,mvollmer/cockpit,cockpit-project/cockpit,SotolitoLabs/cockpit,andreasn/cockpit,petervo/cockpit,garrett/cockpit,martinpitt/cockpit,deryni/cockpit,Scribery/cockpit,garrett/cockpit,cockpit-project/cockpit,SotolitoLabs/cockpit,moraleslazaro/cockpit,cockpit-project/cockpit,mvollmer/cockpit,garrett/cockpit,petervo/cockpit,deryni/cockpit,Scribery/cockpit,andreasn/cockpit,mareklibra/cockpit,moraleslazaro/cockpit,SotolitoLabs/cockpit,Scribery/cockpit,martinpitt/cockpit,stefwalter/cockpit,garrett/cockpit