Merge "Added cloud-init growpart element"

diskimage_builder/elements/cloud-init-growpart/README.rst

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+===================
+cloud-init-growpart
+===================
+
+This element enables growpart for OS images. It allows to grow
+Specific partitions during the deployment process.
+To enable this element simply include it in the elements list.
+
+**Disclaimer:** This element might not work with some device names supplied, for example when server is deployed and the image is written to a fibre channel device, or a SAS/SATA SSD controller.
+
+* ``DIB_CLOUD_INIT_GROWPART_DEVICES``: List of partition names that needs to be populated in order to be grown by cloud-init. **Populating this variable is mandatory.**
+  Cloud-init growpart module documentation - https://cloudinit.readthedocs.io/en/latest/topics/modules.html?highlight=growpart#growpart
+
+Dependencies:
+
+* ``/usr/bin/growpart``: **is needed on the system in order to grow the partition**,
+  however it is part of different packages depending on linux family. That is already taken care of by package-installs.

diskimage_builder/elements/cloud-init-growpart/element-deps

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+package-installs
+pkg-map

diskimage_builder/elements/cloud-init-growpart/package-installs.yaml

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+growpart_package:

diskimage_builder/elements/cloud-init-growpart/pkg-map

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+{
+  "family": {
+    "redhat": {
+      "growpart_package": "cloud-utils-growpart"
+    },
+    "debian": {
+      "growpart_package": "cloud-guest-utils"
+    }
+  }
+}

diskimage_builder/elements/cloud-init-growpart/post-install.d/55-growpart

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+#!/bin/bash
+
+if [ ${DIB_DEBUG_TRACE:-1} -gt 0 ]; then
+    set -x
+fi
+set -eu
+set -o pipefail
+
+if [[ -n ${DIB_CLOUD_INIT_GROWPART_DEVICES} ]]; then
+    if [ -d /etc/cloud/cloud.cfg.d ]; then
+        cat > /etc/cloud/cloud.cfg.d/55-growpart.cfg <<EOF
+#cloud-config
+growpart:
+    mode: auto
+    devices: $DIB_CLOUD_INIT_GROWPART_DEVICES
+    ignore_growroot_disabled: false
+EOF
+    else
+        echo "The /etc/cloud/cloud.cfg.d directory must exist."
+        exit 1
+    fi
+else
+    echo "Set the device list in DIB_CLOUD_INIT_GROWPART_DEVICES."
+    exit 1
+fi

diskimage_builder/elements/cloud-init-growpart/releasenotes/notes/added_growpart_for_lvm-0ce76ba71710c720.yaml

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+---
+features:
+  - |
+    Added growpart element. It allows for growing specific partitions
+    during the deployment, which will result in less post deploy actions
+    needed for the server to be ready for use.
+