Create separate github actions for various checks; get rid of monolithic tox.yml

There are now separate github actions for the various tests, instead of all of
them being done as part of the tox tests in tox.yml - ansible-lint,
ansible-test, etc.

Use the officially supported github actions e.g. for ansible-lint, ansible-test,
rather than using our own from `tox-lsr` and trying to keep up with the latest
changes.  Developers will still be able to use `tox-lsr` on their local
development environments to run these tests in the same way that they are run in
github actions, so that errors found when submitting PRs can be reproduced and
corrected locally without too many github UI roundtrips.

Using separate github actions, and especially the official github actions which
generally have support for in-line comments, should help greatly with
readability and troubleshooting test results.

Python tests are removed from roles that do not use python.

Python tests are now done by python-unit-tests.yml which also does the black,
flake8, and pylint tests.

Signed-off-by: Rich Megginson <rmeggins@redhat.com>

.github/workflows/codeql.yml

@@ -0,0 +1,43 @@
+---
+name: CodeQL
+on:  # yamllint disable-line rule:truthy
+  push:
+    branches: ["main"]
+  pull_request:
+    branches: ["main"]
+  schedule:
+    - cron: 39 10 * * 0
+jobs:
+  analyze:
+    name: Analyze
+    runs-on: ubuntu-latest
+    permissions:
+      actions: read
+      contents: read
+      security-events: write
+    strategy:
+      fail-fast: false
+      matrix:
+        language: [python]
+    steps:
+      - name: Update pip, git
+        run: |
+          set -euxo pipefail
+          sudo apt-get update
+          sudo apt-get install -y git
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Initialize CodeQL
+        uses: github/codeql-action/init@v2
+        with:
+          languages: ${{ matrix.language }}
+          queries: +security-and-quality
+
+      - name: Autobuild
+        uses: github/codeql-action/autobuild@v2
+
+      - name: Perform CodeQL Analysis
+        uses: github/codeql-action/analyze@v2
+        with:
+          category: "/language:${{ matrix.language }}"