log pip freeze output for debugging jenkins builds

pavelib/prereqs.py

@@ -300,3 +300,10 @@ def install_prereqs():
 
     install_node_prereqs()
     install_python_prereqs()
+    log_installed_python_prereqs()
+
+
+def log_installed_python_prereqs():
+    """  Logs output of pip freeze for debugging. """
+    sh("pip freeze > {}".format(Env.GEN_LOG_DIR + "/pip_freeze.log"))
+    return

pavelib/utils/envs.py

@@ -22,12 +22,15 @@ class Env(object):
     REPORT_DIR = REPO_ROOT / 'reports'
     METRICS_DIR = REPORT_DIR / 'metrics'
 
+    # Generic log dir
+    GEN_LOG_DIR = REPO_ROOT / "test_root" / "log"
+
     # Python unittest dirs
     PYTHON_COVERAGERC = REPO_ROOT / ".coveragerc"
 
     # Bok_choy dirs
     BOK_CHOY_DIR = REPO_ROOT / "common" / "test" / "acceptance"
-    BOK_CHOY_LOG_DIR = REPO_ROOT / "test_root" / "log"
+    BOK_CHOY_LOG_DIR = GEN_LOG_DIR
     BOK_CHOY_REPORT_DIR = REPORT_DIR / "bok_choy"
     BOK_CHOY_A11Y_REPORT_DIR = REPORT_DIR / "a11y"
     BOK_CHOY_COVERAGERC = BOK_CHOY_DIR / ".coveragerc"