tests: Updating the tests to use Ubuntu 22.04 docker image

As of https://gem5-review.googlesource.com/c/public/gem5/+/64177 we
support version 22.04. This patch therefore updates the testing
infrastructure (kokoro/quick, nightly/long, weekly/extra-long) to use
the Ubuntu 22.04 docker image.

The "jenkins/gem5art-tests.sh" test script has been updated to no longer
require the `pip upgrade`. This was needed for Ubuntu 20.04 as it
utilized an older version of pip which did not have all the dependencies
these tests requried. As of Ubuntu 20.04 this is no longer required.

Change-Id: Ia8f8b1b2c62ad5d5a8419cb31b6a1d2b6dff7ac9
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/64291
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
diff --git a/tests/jenkins/gem5art-tests.sh b/tests/jenkins/gem5art-tests.sh
index b9dee55..c655fbb 100755
--- a/tests/jenkins/gem5art-tests.sh
+++ b/tests/jenkins/gem5art-tests.sh
@@ -43,14 +43,6 @@
 python3 -m venv .pyenv
 source .pyenv/bin/activate
 
-# The 20.04_all-dependencies image has a slightly outdated version of pip which
-# causes problems when trying to install the celery package. The error
-# is `invalid command 'bdist_wheel'`, which can be resolved by upgrading pip
-# prior to installing the modules. More information on this error is found
-# here:
-# https://stackoverflow.com/questions/34819221/why-is-python-setup-py-saying-invalid-command-bdist-wheel-on-travis-ci
- pip install --upgrade pip
-
 # Install the packages
 pip install -e util/gem5art/artifact
 pip install -e util/gem5art/run
diff --git a/tests/jenkins/presubmit.sh b/tests/jenkins/presubmit.sh
index 44ec8cf..07262b0 100755
--- a/tests/jenkins/presubmit.sh
+++ b/tests/jenkins/presubmit.sh
@@ -37,7 +37,7 @@
 
 set -e
 
-DOCKER_IMAGE_ALL_DEP=gcr.io/gem5-test/ubuntu-20.04_all-dependencies:latest
+DOCKER_IMAGE_ALL_DEP=gcr.io/gem5-test/ubuntu-22.04_all-dependencies:latest
 DOCKER_IMAGE_CLANG_COMPILE=gcr.io/gem5-test/clang-version-11:latest
 PRESUBMIT_STAGE2=tests/jenkins/presubmit-stage2.sh
 GEM5ART_TESTS=tests/jenkins/gem5art-tests.sh
diff --git a/tests/nightly.sh b/tests/nightly.sh
index 46dd50e..bd42d4b 100755
--- a/tests/nightly.sh
+++ b/tests/nightly.sh
@@ -69,7 +69,7 @@
     # compilation: https://gem5.atlassian.net/browse/GEM5-753
     docker run -u $UID:$GID --volume "${gem5_root}":"${gem5_root}" -w \
         "${gem5_root}" --memory="${docker_mem_limit}" --rm \
-        gcr.io/gem5-test/ubuntu-20.04_all-dependencies:latest \
+        gcr.io/gem5-test/ubuntu-22.04_all-dependencies:latest \
             bash -c "scons build/${isa}/gem5.opt -j${compile_threads} \
             --ignore-style || (rm -rf build && scons build/${isa}/gem5.opt \
             -j${compile_threads} --ignore-style)"
@@ -80,13 +80,13 @@
 
     docker run -u $UID:$GID --volume "${gem5_root}":"${gem5_root}" -w \
         "${gem5_root}" --memory="${docker_mem_limit}" --rm \
-        gcr.io/gem5-test/ubuntu-20.04_all-dependencies:latest \
+        gcr.io/gem5-test/ubuntu-22.04_all-dependencies:latest \
             scons build/ALL/unittests.${build} -j${compile_threads} \
             --ignore-style
 }
 
 # Ensure we have the latest docker images.
-docker pull gcr.io/gem5-test/ubuntu-20.04_all-dependencies:latest
+docker pull gcr.io/gem5-test/ubuntu-22.04_all-dependencies:latest
 
 # Try to build the ISA targets.
 build_target NULL
@@ -104,7 +104,7 @@
 # Run the gem5 long tests.
 docker run -u $UID:$GID --volume "${gem5_root}":"${gem5_root}" -w \
     "${gem5_root}"/tests --memory="${docker_mem_limit}" --rm \
-    gcr.io/gem5-test/ubuntu-20.04_all-dependencies:latest \
+    gcr.io/gem5-test/ubuntu-22.04_all-dependencies:latest \
         ./main.py run --length long -j${compile_threads} -t${run_threads} -vv
 
 # Unfortunately, due docker being unable run KVM, we do so separately.
@@ -187,7 +187,7 @@
     rm -rf "${gem5_root}/build/ARM"
     docker run -u $UID:$GID --volume "${gem5_root}":"${gem5_root}" -w \
         "${gem5_root}" --memory="${docker_mem_limit}" --rm \
-        gcr.io/gem5-test/ubuntu-20.04_all-dependencies:latest bash -c "\
+        gcr.io/gem5-test/ubuntu-22.04_all-dependencies:latest bash -c "\
 scons -j${compile_threads} --ignore-style build/ARM/gem5.opt; \
 scons --with-cxx-config --without-python --without-tcmalloc USE_SYSTEMC=0 \
     -j${compile_threads} build/ARM/libgem5_opt.so \
diff --git a/tests/weekly.sh b/tests/weekly.sh
index 373885f..3d8af29 100755
--- a/tests/weekly.sh
+++ b/tests/weekly.sh
@@ -59,7 +59,7 @@
 # Run the gem5 very-long tests.
 docker run -u $UID:$GID --volume "${gem5_root}":"${gem5_root}" -w \
     "${gem5_root}"/tests --memory="${docker_mem_limit}" --rm \
-    gcr.io/gem5-test/ubuntu-20.04_all-dependencies:latest \
+    gcr.io/gem5-test/ubuntu-22.04_all-dependencies:latest \
         ./main.py run --length very-long -j${threads} -t${threads} -vv
 
 mkdir -p tests/testing-results