[#3350] upgrade pip in hammer for rhel

Fixes this on RHEL 8: You are using pip version 9.0.3, however version 24.0 is available.

diff --git a/hammer.py b/hammer.py
index e08b08e0a71a30f9eec0385ca5b0ada1cb49d990..036c941efd6b40487f41b0574c4f7f9b98a944ce 100755 (executable)
--- a/hammer.py
+++ b/hammer.py
@@ -1763,6 +1763,8 @@ def install_packages_local(system, revision, features, check_times, ignore_error
             # kea-packaging points Kea to the venv using --with-sphinx.
             execute('python3 -m venv ~/venv',
                     env=env, timeout=60, check_times=check_times)
+            execute('~/venv/bin/pip install --upgrade pip',
+                    env=env, timeout=120, check_times=check_times)
             execute('~/venv/bin/pip install sphinx sphinx-rtd-theme',
                     env=env, timeout=120, check_times=check_times)