[geary/wip/gitlab-ci] Add missing itstool install dependency.

[Michael Gratton <mjog src gnome org>]

commit c0eb650f7eaab1b9203bfb37ecabf04059237461
Author: Michael James Gratton <mike vee net>
Date:   Sun Jun 10 18:13:20 2018 +1000

    Add missing itstool install dependency.

 .gitlab-ci.yml | 2 +-
 INSTALL        | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index b089c47b..bb33f73a 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -17,7 +17,7 @@ variables:
                 glib2-devel gmime-devel gtk3-devel libnotify-devel sqlite-devel
                 webkitgtk4-devel libsecret-devel libxml2-devel vala-tools
                 gcr-devel enchant-devel libunwind-devel
-                gnome-online-accounts-devel
+                gnome-online-accounts-devel itstool
 
 before_script:
   - dnf update -y --nogpgcheck && dnf install -y --nogpgcheck $DEPENDENCIES
diff --git a/INSTALL b/INSTALL
index 5393aef4..4e1468cd 100644
--- a/INSTALL
+++ b/INSTALL
@@ -46,7 +46,7 @@ libraries. Install them by running this command:
         glib2-devel gmime-devel gtk3-devel libnotify-devel sqlite-devel \
         webkitgtk4-devel libsecret-devel libxml2-devel vala-tools \
         gcr-devel enchant-devel libunwind-devel \
-        gnome-online-accounts-devel
+        gnome-online-accounts-devel itstool
 
 Installing dependencies on Ubuntu/Debian
 ----------------------------------------
@@ -67,7 +67,7 @@ Install them by running this command:
         libgee-0.8-dev libglib2.0-dev libgmime-2.6-dev libgtk-3-dev \
         libsecret-1-dev libxml2-dev libnotify-dev libsqlite3-dev \
         libwebkit2gtk-4.0-dev libgcr-3-dev libenchant-dev \
-        libunwind-dev libgoa-1.0-dev
+        libunwind-dev libgoa-1.0-dev itstool
 
 And for Ubuntu Unity integration: