Fix some virtualenv-related places

- on Ubuntu Xenial, `python-virtualenv` package no longer installs
  `virtualenv` shell script.
  Change all `virtualenv` invocations to 'python -m virtualenv',
  which is more portable.
  - in `pip_install.yml`, add `virtualenv_command` argument using
    the same portable invocation.
- in `install-deps.sh`, the condition to install `python-virtualenv`
  was missing the `not` part
- the venv is created with `sudo` elevation in `install-deps.sh`,
  thus in `env-setup.sh` Ansible must be installed into venv
  using `sudo` elevation as well.
- in `install.yml`, fix passing `bifrost_venv_dir` var to `pip_install.yml`

Change-Id: Ifaa54a0dc97ed59ca8360e62878b603a04105e46

playbooks/roles/bifrost-ironic-install/tasks/install.yml

@@ -80,10 +80,10 @@
     source_install={{ ironicclient_source_install }}
   when: skip_install is not defined
 - name: "Install configparser in venv if using"
-  include: pip_install.yml package=configparser virtualenv=bifrost_venv_dir
+  include: pip_install.yml package=configparser virtualenv={{ bifrost_venv_dir }}
   when: skip_install is not defined and (enable_venv | bool == true)
 - name: "Install pymysql in venv if using"
-  include: pip_install.yml package=pymysql virtualenv=bifrost_venv_dir
+  include: pip_install.yml package=pymysql virtualenv={{ bifrost_venv_dir }}
   when: skip_install is not defined and (enable_venv | bool == true)
 - name: "Install Ironic using pip"
   include: pip_install.yml

playbooks/roles/bifrost-ironic-install/tasks/pip_install.yml

@@ -13,12 +13,19 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 ---
+
+- name: set virtualenv_command
+  set_fact:
+    venv_command: "{{ hostvars[inventory_hostname].ansible_python.executable }} -m virtualenv"
+  when: enable_venv
+
 - name: "Install {{ package }} package from pip"
   pip:
     name: "{{ package }}"
     state: "{{ state | default(omit) }}"
     version: "{{ version | default(omit) }}"
     virtualenv: "{{ bifrost_venv_dir if enable_venv else omit }}"
+    virtualenv_command: "{{ venv_command | default(omit) }}"
     extra_args: "{{ extra_args | default(omit) }}"
   when: source_install is not defined or source_install == false
 # NOTE (cinerama): We should be able to use the pip module here and

scripts/env-setup.sh

@@ -10,7 +10,7 @@ ANSIBLE_PIP_VERSION=${ANSIBLE_PIP_VERSION:-${ANSIBLE_GIT_BRANCH:-stable-2.1}}
 ANSIBLE_PIP_STRING=$(${PYTHON} $(dirname $0)/ansible-pip-str.py ${ANSIBLE_PIP_VERSION})
 
 if [ -n "${VENV-}" ]; then
-    ${PIP} install --upgrade "${ANSIBLE_PIP_STRING}"
+    sudo -H -E ${PIP} install --upgrade "${ANSIBLE_PIP_STRING}"
     ANSIBLE=${VENV}/bin/ansible
 else
     ${PIP} install --user --upgrade "${ANSIBLE_PIP_STRING}"

scripts/install-deps.sh

@@ -82,7 +82,7 @@ if ! $(wget --version &>/dev/null); then
     ${INSTALLER_CMD} ${PKG_MAP[wget]}
 fi
 if [ -n "${VENV-}" ]; then
-    if $(virtualenv --version &>/dev/null); then
+    if ! $(python -m virtualenv --version &>/dev/null); then
         ${INSTALLER_CMD} ${PKG_MAP[venv]}
     fi
 fi
@@ -105,7 +105,7 @@ if [ -n "${VENV-}" ]; then
     echo "NOTICE: Using virtualenv for this installation."
     if [ ! -f ${VENV}/bin/activate ]; then
         # only create venv if one doesn't exist
-        sudo -H -E virtualenv --no-site-packages ${VENV}
+        sudo -H -E python -m virtualenv --no-site-packages ${VENV}
     fi
     # Note(cinerama): activate is not compatible with "set -u";
     # disable it just for this line.

scripts/test-bifrost.sh

@@ -94,12 +94,11 @@ fi
 
 if [ ${USE_VENV} = "true" ]; then
     export VENV=/opt/stack/bifrost
-    export PATH=${VENV}/bin:${PATH}
     $SCRIPT_HOME/env-setup.sh
     # Note(cinerama): activate is not compatible with "set -u";
     # disable it just for this line.
     set +u
-    source /opt/stack/bifrost/bin/activate
+    source ${VENV}/bin/activate
     set -u
     ANSIBLE=${VENV}/bin/ansible-playbook
     ENABLE_VENV="true"