Introduce istio installation

App installation has been moved to swconfig repo to decouple it from
the regular engine. It can be installed from the scenario as an
extra deployment feature. Istio has been added as a first example.

deploy-scenario: k8-calico-nofeature
installer-type: kubespray

Change-Id: I2cc4bf9121b1d3800645b10db23532a5dd1a04b0
diff --git a/apps/istio/kubespray/playbooks/install.yml b/apps/istio/kubespray/playbooks/install.yml
new file mode 100644
index 0000000..640dedf
--- /dev/null
+++ b/apps/istio/kubespray/playbooks/install.yml
@@ -0,0 +1,30 @@
+---
+# ============LICENSE_START=======================================================
+#  Copyright (C) 2019 The Nordix Foundation. All rights reserved.
+# ================================================================================
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# 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.
+#
+# SPDX-License-Identifier: Apache-2.0
+# ============LICENSE_END=========================================================
+
+- hosts: localhost
+  gather_facts: true
+  become: no
+  vars_files:
+    - "{{ engine_path }}/engine/var/versions.yml"
+    - "{{ engine_path }}/engine/var/global.yml"
+
+  roles:
+    - role: install
+
+# vim: set ts=2 sw=2 expandtab: