Split functional testings via github action matrix

This commit changes the workflow of the github actions.

We split the workflow into different parts:

1) build zfs modules for Ubuntu 20.04 and 22.04 (~25m)
2) 2x zloop test (~10m) + 2x sanity test (~25m)
3) functional testings in parts 1..5 (each ~1h)
   - these could be triggered, when sanity tests are ok
   - currently I just start them all in the same time
4) cleanup and create summary

When everything is fine, the full run with all testings
should be done in around 2 hours.

The codeql.yml and checkstyle.yml are not part in this circle.

The testings are also modified a bit:
- report info about CPU and checksum benchmarks
- reset the debugging logs for each test
  - when some error occurred, we call dmesg with -c to get
    only the log output for the last failed test
  - we empty also the dbgsys

Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Tino Reichardt <milky-zfs@mcmilk.de>
Closes #14078

.github/workflows/zloop.yml

@@ -1,65 +0,0 @@
-name: zloop
-
-on:
-  push:
-  pull_request:
-
-jobs:
-  tests:
-    runs-on: ubuntu-22.04
-    env:
-      TEST_DIR: /var/tmp/zloop
-    steps:
-    - uses: actions/checkout@v3
-      with:
-        ref: ${{ github.event.pull_request.head.sha }}
-    - name: Install dependencies
-      run: |
-        # https://github.com/orgs/community/discussions/47863
-        sudo apt-mark hold grub-efi-amd64-signed
-        sudo apt-get update --fix-missing
-        sudo apt-get upgrade
-        sudo xargs --arg-file=${{ github.workspace }}/.github/workflows/build-dependencies.txt apt-get install -qq
-        sudo apt-get clean
-    - name: Autogen.sh
-      run: |
-        ./autogen.sh
-    - name: Configure
-      run: |
-        ./configure --enable-debug --enable-debuginfo --enable-asan --enable-ubsan
-    - name: Make
-      run: |
-        make -j$(nproc) --no-print-directory --silent pkg-utils pkg-kmod
-    - name: Install
-      run: |
-        sudo dpkg -i *.deb
-        # Update order of directories to search for modules, otherwise
-        #   Ubuntu will load kernel-shipped ones.
-        sudo sed -i.bak 's/updates/extra updates/' /etc/depmod.d/ubuntu.conf
-        sudo depmod
-        sudo modprobe zfs
-    - name: Tests
-      run: |
-        sudo mkdir -p $TEST_DIR
-        # run for 10 minutes or at most 2 iterations for a maximum runner
-        #   time of 20 minutes.
-        sudo /usr/share/zfs/zloop.sh -t 600 -I 2 -l -m1 -- -T 120 -P 60
-    - name: Prepare artifacts
-      if: failure()
-      run: |
-        sudo chmod +r -R $TEST_DIR/
-    - uses: actions/upload-artifact@v3
-      if: failure()
-      with:
-        name: Logs
-        path: |
-          /var/tmp/zloop/*/
-          !/var/tmp/zloop/*/vdev/
-        if-no-files-found: ignore
-    - uses: actions/upload-artifact@v3
-      if: failure()
-      with:
-        name: Pool files
-        path: |
-          /var/tmp/zloop/*/vdev/
-        if-no-files-found: ignore