* Update simnet tests to v4

* enable simnet tests for PRs

* add stage to job "test-linux-stable-int"

* v2.0.0simnet

* alow build-for-simnet option

* Fix passing of IMAGE_TAG to downstream

* forgot to build-for-simnet

* build-for-simnet

* build-for-simnet

* build-for-simnet

* build-for-simnet

* build-for-simnet

* take a shortcut build-for-simnet

* build-for-simnet

* update triggering script to polkadot version

* "revert me"

* "revert me"  build-for-simnet

* add simnet version as arg to script

* revert me build-for-simnet

* build-for-simnet

* remove triggering simnet for PRs for now

* Add suggestions from Vladimir

* Add suggestions from Vladimir

* CI: chore

* CI: pin simnet version

* CI: opt bench jobs; add bench to triggered job

* CI: no need in manual builds; build=publish

* CI: more logs to the trigger job

* CI: DAGs and louts

* CI: trigger guard [skip ci]

* CI: variables and dotenv [skip ci]

* CI: correct variable for simnet trigger

* CI: correct rules for simnet trigger

* fix linting issue :)

* CI: trigger simnet via API

Co-authored-by: radupopa2010 <radupopa2010@yahoo.com>