Azure/GitLab: Ensure we use requirements.txt for testsuites

Given that test/py/requirements.txt has all required test modules, make
use of that rather than a manual pip install list before running our
assorted tool testsuites.
Signed-off-by: NTom Rini <trini@konsulko.com>
Reviewed-by: NBin Meng <bmeng.cn@gmail.com>

.azure-pipelines.yml

@@ -144,7 +144,7 @@ jobs:
           export USER=azure
           virtualenv -p /usr/bin/python3 /tmp/venv
           . /tmp/venv/bin/activate
-          pip install pyelftools pytest pygit2
+          pip install -r test/py/requirements.txt
           export UBOOT_TRAVIS_BUILD_DIR=/tmp/sandbox_spl
           export PYTHONPATH=${UBOOT_TRAVIS_BUILD_DIR}/scripts/dtc/pylibfdt
           export PATH=${UBOOT_TRAVIS_BUILD_DIR}/scripts/dtc:${PATH}

.gitlab-ci.yml

@@ -151,7 +151,7 @@ Run binman, buildman, dtoc, Kconfig and patman testsuites:
       export USER=gitlab;
       virtualenv -p /usr/bin/python3 /tmp/venv;
       . /tmp/venv/bin/activate;
-      pip install pyelftools pytest pygit2;
+      pip install -r test/py/requirements.txt;
       export UBOOT_TRAVIS_BUILD_DIR=/tmp/sandbox_spl;
       export PYTHONPATH="${UBOOT_TRAVIS_BUILD_DIR}/scripts/dtc/pylibfdt";
       export PATH="${UBOOT_TRAVIS_BUILD_DIR}/scripts/dtc:${PATH}";