add deltarmp config options

defaults/main.yml

@@ -28,6 +28,15 @@ yum_repositories: []
 #     enabled: True
 # @end
 
+# @var yum_deltarpm_value:description: >
+# Configure deltarmp. To get it working you have to install `deltarpm` package first!
+# Value set to `0` means disabled. A positive value defines the number
+# of reconstruction made in parallel. A negative value asks yum to figure out how many cores
+# are available and to multiply them by the given value to get the number of
+# reconstruction to make in parallel.
+yum_deltarpm_value: 0
+yum_deltarpm_percentage: 75
+
 yum_upgrade_enabled: False
 yum_packages_install: []
 yum_packages_uninstall: []

templates/etc/yum.conf.j2

@@ -0,0 +1,32 @@
+#jinja2: lstrip_blocks: True
+{{ ansible_managed | comment }}
+[main]
+cachedir=/var/cache/yum/$basearch/$releasever
+keepcache=0
+debuglevel=2
+logfile=/var/log/yum.log
+exactarch=1
+obsoletes=1
+gpgcheck=1
+plugins=1
+installonly_limit=5
+bugtracker_url=http://bugs.centos.org/set_project.php?project_id=23&ref=http://bugs.centos.org/bug_report_page.php?category=yum
+distroverpkg=centos-release
+{% if yum_deltarpm_value != 0 %}
+deltarpm={{ yum_deltarpm_value }}
+deltarpm_percentage={{ yum_deltarpm_percentage }}
+{% endif %}
+
+
+#  This is the default, if you make this bigger yum won't see if the metadata
+# is newer on the remote and so you'll "gain" the bandwidth of not having to
+# download the new metadata and "pay" for it by yum not having correct
+# information.
+#  It is esp. important, to have correct metadata, for distributions like
+# Fedora which don't keep old packages around. If you don't like this checking
+# interupting your command line usage, it's much better to have something
+# manually check the metadata once an hour (yum-updatesd will do this).
+# metadata_expire=90m
+
+# PUT YOUR REPOS HERE OR IN separate files named file.repo
+# in /etc/yum.repos.d