E2E: Run e2e tests on PRs and easy local isolated e2e grafana server setup & conf (#22772)

* e2e: Trying to get end-2-end tests to run on PRs

* Probably need quotes here

* Change back to machine

* CI: only build amd64 docker

* lowercase docker image name

* Fixed docker image name

* added end-to-end-test

* Fixed paths

* Added setup_remote_docker

* Updated

* Minor tweak

* update

* Testing

* UpdateD#

* Making some progress

* Update

* Updated

* update

* Updated

* Updated

* testing

* Updated

* Updated

* Updated

* Updated

* updated

* Changed image

* Updated image

* updated

* Addd logging

* trying one more thing

* Fixed build-fast-frontend

* Updated

* Added devenv to end-to-end server setup

* removed file

* Updated

* Minor change

* Fixes

* Updated workspace, and tried to make naming and paths compatible with master & release jobs

* fixed syntax issue

* Updated truth

* Fixed path

e2e/variables

@@ -0,0 +1,7 @@
+#!/bin/bash
+
+RUNDIR=e2e/tmp
+PIDFILE=$RUNDIR/pid
+PACKAGE_FILE=/tmp/workspace/oss/dist/grafana-*linux-amd64.tar.gz
+PROV_DIR=$RUNDIR/conf/provisioning
+PORT=3001