Introduce jammy-amd64-tf-a-build

With the latest LTS release of Ubuntu 22.04 (Jammy Jellyfish),
a docker image for TF-A should be made available.

This build replicates the bionic setup on jammy.

Notable changes:
  * cppcheck upgraded from 1.8.1 to 2.7 due to compiler changes
  * PyYAML upgraded from 3.1.2 to 6.0
  * clang-tools-6.0 is no longer available from the distro so
    install the default version
  * python2 packages are no longer available, so the psutil module
    is being installed via pip2 instead of apt
  * python3-crypto has been removed due to CVE-2020-36242 and
    replaced by pycryptodome installed via pip3

Signed-off-by: Kelley Spoon <kelley.spoon@linaro.org>
Change-Id: Idb724683350482345e2543b23bfe41b769c0d350
diff --git a/jammy-amd64-tf-a-build/requirements_python2.txt b/jammy-amd64-tf-a-build/requirements_python2.txt
new file mode 100644
index 0000000..a34ca8a
--- /dev/null
+++ b/jammy-amd64-tf-a-build/requirements_python2.txt
@@ -0,0 +1,2 @@
+pygments==2.2.0
+psutil