Toolkit: Update slim debian image for e2e testing (#23629)

* Because alpine uses musl instead of libc, the e2e/cypress was not compatible
So:
- Created new VM based on debian-slim
- Could also be used as a build VM

Fixes:
- ginstall issue with merge somewhere.
- Trimmed down the alpine VM since we don't need the extra libraries for cypress

* Fix: Don't need cp on debian
Fix: Don't use /bin/sh on debian. Only for alpine. Use /bin/bash on debian
Fix: Missing dependencies to e2e tests

packages/grafana-toolkit/docker/grafana-plugin-ci-e2e/install/ginstall

-#!/bin/sh
+#!/bin/bash
 ##
 # gget
 # A script to get and install grafana versions

packages/grafana-toolkit/docker/grafana-plugin-ci-e2e/scripts/deploy-slim.sh

@@ -2,5 +2,5 @@
 source "/etc/profile"
 
 apt-get --allow-insecure-repositories update
-apt-get install --allow-unauthenticated -y build-essential wget git sudo adduser libfontconfig1 locate libnss3 libnspr4 libgdk-pixbuf2.0-0 libgtk-3-0 libpangocairo-1.0-0 libpango-1.0-0 libatk1.0-0 libcairo2 libdbus-1-3 libxcomposite1 libxrender1 libxcursor1 libxi6 libxtst6 libxrandr2 libxss1 libasound2 libatk-bridge2.0-0 libatspi2.0-0 libcups2 
+apt-get install --allow-unauthenticated -y build-essential wget git sudo adduser libfontconfig1 locate libnss3 libnspr4 libgdk-pixbuf2.0-0 libgtk-3-0 libpangocairo-1.0-0 libpango-1.0-0 libatk1.0-0 libcairo2 libdbus-1-3 libxcomposite1 libxrender1 libxcursor1 libxi6 libxtst6 libxrandr2 libxss1 libasound2 libatk-bridge2.0-0 libatspi2.0-0 libcups2 jq xvfb net-tools