Add a pip list step after the overrides are injected

Currently the pip freeze happens after the initial dependency
install, but before the OVERRIDE_REQUIREMENTS option
is handled by Jenkins. This makes it difficult to see if Jenkins
has successfully installed an overriden requirement for the
test run.

JenkinsfileRT

@@ -90,6 +90,9 @@ bc0.build_cmds = [
     'echo "CRDS_CONTEXT = $(crds list --contexts $CRDS_CONTEXT --mappings | grep pmap)"',
 ]
 bc0.build_cmds = bc0.build_cmds + PipInject(env.OVERRIDE_REQUIREMENTS)
+bc0.build_cmds = [
+    "pip list"
+]
 bc0.test_cmds = [
     "pytest --cov-report=xml:coverage.xml --cov=./ -r sxf -n auto --bigdata --slow \
     --ddtrace \

JenkinsfileRT_dev

@@ -88,6 +88,9 @@ bc0.build_cmds = [
     'echo "CRDS_CONTEXT = $(crds list --contexts $CRDS_CONTEXT --mappings | grep pmap)"',
 ]
 bc0.build_cmds = bc0.build_cmds + PipInject(env.OVERRIDE_REQUIREMENTS)
+bc0.build_cmds = [
+    "pip list"
+]
 bc0.test_cmds = [
     "pytest -r sxf -n auto --bigdata --slow \
     --basetemp=${pytest_basetemp} --junit-xml=results.xml --dist=loadscope \