Added list pips tool

tools/list_pips.py

@@ -0,0 +1,45 @@
+import os
+import sys
+import tempfile
+
+possible_topdir = os.path.normpath(os.path.join(os.path.abspath(sys.argv[0]), os.pardir, os.pardir))
+sys.path.insert(0, possible_topdir)
+
+from devstack import utils
+from devstack import settings
+from devstack import component
+from devstack.progs import common
+
+def get_pips(c, distro):
+    cls = common.get_action_cls(settings.INSTALL, c)
+    dummy_config = common.get_config()
+    dummy_root = tempfile.gettempdir()
+    instance = cls(instances=set(), distro=distro,
+                    packager=None, config=dummy_config,
+                    root=dummy_root, opts=list(),
+                    keep_old=False)
+    if not isinstance(instance, component.PythonInstallComponent):
+        return None
+    else:
+        return instance._get_pips_expanded()
+
+
+if __name__ == "__main__":
+    me = os.path.basename(sys.argv[0])
+    if len(sys.argv) < 2:
+        print("%s distro" % (me))
+        sys.exit(1)
+    distro = sys.argv[1]
+    for c in sorted(settings.COMPONENT_NAMES):
+        print("Pips for %s:" % (utils.color_text(c, 'green', bold=True, underline=True)))
+        pips = get_pips(c, distro)
+        if pips is None or not pips:
+            print("\t- %s" % (utils.color_text('N/A', 'red')))
+        else:
+            names = sorted(pips.keys())
+            for name in names:
+                real_name = name
+                info = pips.get(name) or dict()
+                if 'version' in info:
+                    real_name = "%s == %s" % (name, utils.color_text(str(info.get('version')), 'blue', bold=True))
+                print("\t- %s" % real_name)