CLD-6297 - E2E tests improvements (#24541)

* Improve e2etests readme, remove unused apt install
* Add testing E2E Tests MultiOS
* Get rid of deprecation warning
* Smart selection of docker network driver for different OSes
* Unify makefile invocation for windows as well
* Tune JVM for ES and Keycloak
* fix: Made required changes to run locally on arm MacOS
* fix: FIxed network command and removed dashboard node user as it is not needed
* fix: make dashboard work for Mac
* Make runs without dashboard work again, make BROWSE tunable and document it

---------

Co-authored-by: Mattermost Build <build@mattermost.com>
Co-authored-by: Antonis Stamatiou <stamatiou.antonis@gmail.com>

e2e-tests/Makefile

@@ -7,20 +7,20 @@ stop: stop-server stop-dashboard clean-env-placeholders
 
 .PHONY: start-server prepare-server run-cypress stop-server restart-server
 start-server:
-	./.ci/server.start.sh
+	bash ./.ci/server.start.sh
 prepare-server:
-	./.ci/server.prepare.sh
+	bash ./.ci/server.prepare.sh
 run-cypress:
-	./.ci/server.run_cypress.sh
+	bash ./.ci/server.run_cypress.sh
 stop-server:
-	./.ci/server.stop.sh
+	bash ./.ci/server.stop.sh
 restart-server: stop-server start-server
 
 .PHONY: start-dashboard stop-dashboard
 start-dashboard:
-	./.ci/dashboard.start.sh
+	bash ./.ci/dashboard.start.sh
 stop-dashboard:
-	./.ci/dashboard.stop.sh
+	bash ./.ci/dashboard.stop.sh
 
 .PHONY: print-env-placeholders clean-env-placeholders
 print-env-placeholders: