Sync venv scripts from oslo-incubator

Currently install_venv.py and with_venv.sh create virtual
environment in .venv directory and there is no way to specify
the virtual environment path explicitly.

This has been fixed in oslo-incubator.
This patch sync those virtual environment scripts from oslo-incubator.
Also make run_test.sh and run_tempest.sh scripts to use 'VENV' env variable.

Change-Id: I55311cff4dea1f6c5adaa2a6d51eeee2f6cc71ea
Closes-Bug: 1370086

openstack-common.conf

@@ -3,6 +3,8 @@
 # The list of modules to copy from openstack-common
 module=install_venv_common
 module=versionutils
+module=with_venv
+module=install_venv
 
 # The base module to hold the copy of openstack.common
 base=tempest

run_tempest.sh

@@ -20,7 +20,7 @@ function usage {
 }
 
 testrargs=""
-venv=.venv
+venv=${VENV:-.venv}
 with_venv=tools/with_venv.sh
 serial=0
 always_venv=0

run_tests.sh

@@ -19,7 +19,7 @@ function usage {
 
 testrargs=""
 just_pep8=0
-venv=.venv
+venv=${VENV:-.venv}
 with_venv=tools/with_venv.sh
 serial=0
 always_venv=0

tools/install_venv.py

@@ -48,11 +48,11 @@ def print_help(venv, root):
 def main(argv):
     root = os.path.dirname(os.path.dirname(os.path.realpath(__file__)))
 
-    if os.environ.get('tools_path'):
-        root = os.environ['tools_path']
+    if os.environ.get('TOOLS_PATH'):
+        root = os.environ['TOOLS_PATH']
     venv = os.path.join(root, '.venv')
-    if os.environ.get('venv'):
-        venv = os.environ['venv']
+    if os.environ.get('VENV'):
+        venv = os.environ['VENV']
 
     pip_requires = os.path.join(root, 'requirements.txt')
     test_requires = os.path.join(root, 'test-requirements.txt')

tools/install_venv_common.py

@@ -101,6 +101,7 @@ class InstallVenv(object):
             print('done.')
         else:
             print("venv already exists...")
+            pass
 
     def pip_install(self, *args):
         self.run_command(['tools/with_venv.sh',
@@ -124,7 +125,7 @@ class InstallVenv(object):
         parser.add_option('-n', '--no-site-packages',
                           action='store_true',
                           help="Do not inherit packages from global Python "
-                               "install")
+                               "install.")
         return parser.parse_args(argv[1:])[0]
 
 

tools/with_venv.sh

@@ -1,4 +1,6 @@
 #!/bin/bash
-TOOLS=`dirname $0`
-VENV=$TOOLS/../.venv
-source $VENV/bin/activate && "$@"
+TOOLS_PATH=${TOOLS_PATH:-$(dirname $0)/../}
+VENV_PATH=${VENV_PATH:-${TOOLS_PATH}}
+VENV_DIR=${VENV_DIR:-/.venv}
+VENV=${VENV:-${VENV_PATH}/${VENV_DIR}}
+source ${VENV}/bin/activate && "$@"