Install network storage related packages only on volume and backup containers

It's unnecessary and even not recommended to install network storage
related packages on all containers including api and scheduler one.

This change makes open-iscsi, nfs-utils and rpcbind required just
for cinder-volume and cinder-backup because it's obligatory when using
various backends.

It's not based on checking used volume drivers because most of them
relies on iSCSI and NFS.

Depends-On: https://review.openstack.org/615869
Change-Id: If289b3e0b00a279afe3c13a628eed2bc4eacc0f7
Closes-Bug: #1704161

vars/distro_install.yml

@@ -26,6 +26,9 @@ cinder_package_list: |-
   {%     set _ = packages.extend(cinder_lvm_volume_distro_packages) %}
   {%   endif %}
   {% endif %}
+  {% if cinder_services['cinder-backup']['group'] in group_names %}
+  {%   set _ = packages.extend(cinder_backup_distro_packages) %}
+  {% endif %}
   {% if cinder_oslomsg_amqp1_enabled | bool %}
   {%   set _ = packages.extend(cinder_oslomsg_amqp1_distro_packages) %}
   {% endif %}

vars/redhat-7.yml

@@ -21,8 +21,6 @@ cinder_distro_packages:
   - iscsi-initiator-utils
   - kmod-libs
   - libxml2
-  - nfs-utils
-  - rpcbind
   - which
 
 cinder_service_distro_packages:
@@ -43,6 +41,9 @@ cinder_devel_distro_packages:
 
 cinder_volume_distro_packages:
   - qemu-img-ev
+  - iscsi-initiator-utils
+  - nfs-utils
+  - rpcbind
 
 cinder_lvm_volume_distro_packages:
   - device-mapper-event
@@ -50,6 +51,11 @@ cinder_lvm_volume_distro_packages:
   - parted
   - targetcli
 
+cinder_backup_distro_packages:
+  - iscsi-initiator-utils
+  - nfs-utils
+  - rpcbind
+
 cinder_oslomsg_amqp1_distro_packages:
   - cyrus-sasl-lib
   - cyrus-sasl-plain

vars/suse.yml

@@ -22,9 +22,6 @@ cinder_distro_packages:
   - libkmod2
   - libpython2_7-1_0
   - libxml2
-  - nfs-utils
-  - open-iscsi
-  - rpcbind
   - which
 
 cinder_service_distro_packages:
@@ -50,6 +47,9 @@ cinder_devel_distro_packages:
 
 cinder_volume_distro_packages:
   - qemu-tools
+  - open-iscsi
+  - nfs-utils
+  - rpcbind
 
 cinder_lvm_volume_distro_packages:
   - device-mapper
@@ -57,6 +57,11 @@ cinder_lvm_volume_distro_packages:
   - parted
   - tgt
 
+cinder_backup_distro_packages:
+  - open-iscsi
+  - nfs-utils
+  - rpcbind
+
 cinder_oslomsg_amqp1_distro_packages:
   - cyrus-sasl
   - cyrus-sasl-plain

vars/ubuntu.yml

@@ -25,9 +25,6 @@ cinder_distro_packages:
   - libkmod2
   - libpython2.7
   - libxml2
-  - nfs-common
-  - open-iscsi
-  - rpcbind
   - rsync
   - zlib1g
   - zlibc
@@ -55,6 +52,9 @@ cinder_devel_distro_packages:
 
 cinder_volume_distro_packages:
   - qemu-utils
+  - open-iscsi
+  - nfs-common
+  - rpcbind
 
 cinder_lvm_volume_distro_packages:
   - dmeventd
@@ -63,6 +63,11 @@ cinder_lvm_volume_distro_packages:
   - tgt
   - thin-provisioning-tools
 
+cinder_backup_distro_packages:
+  - open-iscsi
+  - nfs-common
+  - rpcbind
+
 cinder_oslomsg_amqp1_distro_packages:
   - libsasl2-modules
   - sasl2-bin