Remove unnecessary package install duplication

Currently the devel packages are installed everywhere,
but they only need to be where the wheels are built.

Also, there is already a task to install the packages
needed on the target hosts when installing - so we do
not need to give the same list to the venv install role
because they will already have been installed.

Change-Id: Ifdff299a81cbba90cf819c9a628650c8b1be3d6a

tasks/horizon_install_source.yml

@@ -65,7 +65,6 @@
   vars:
     venv_build_distro_package_list: "{{ horizon_devel_distro_packages }}"
     venv_install_destination_path: "{{ horizon_bin | dirname }}"
-    venv_install_distro_package_list: "{{ horizon_distro_packages }}"
     venv_pip_install_args: "{{ horizon_pip_install_args }}"
     venv_pip_packages: >-
       {{ horizon_pip_packages + horizon_optional_pip_packages +

vars/source_install.yml

@@ -12,7 +12,8 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-horizon_package_list: "{{ horizon_distro_packages + horizon_devel_distro_packages }}"
+
+horizon_package_list: "{{ horizon_distro_packages }}"
 _horizon_bin: "/openstack/venvs/horizon-{{ horizon_venv_tag }}/bin"
 _horizon_lib_dir: "{{ _horizon_bin | dirname }}/lib/python2.7/dist-packages"
 horizon_python_lib_dir: "{{ _horizon_lib_dir }}"