Add python and growpart to images (#676)

* add python3 to images

* add growpart

Author: GregWhiteyBialas

etc/kayobe/stackhpc-overcloud-dib.yml

@@ -67,13 +67,16 @@ stackhpc_overcloud_dib_packages:
   - "vim"
   - "git"
   - "less"
+  - "python3"
   - "{% if os_distribution == 'ubuntu' %}netbase{% endif %}"
   - "{% if os_distribution == 'ubuntu' %}iputils-ping{% endif %}"
   - "{% if os_distribution == 'ubuntu' %}curl{% endif %}"
   - "{% if os_distribution == 'ubuntu' %}apt-utils{% endif %}"
   - "{% if os_distribution == 'centos' %}openssh-clients{% endif %}"
   - "{% if os_distribution == 'rocky' %}NetworkManager-config-server{% endif %}"
   - "{% if os_distribution == 'rocky' %}linux-firmware{% endif %}"
+  - "{% if os_distribution == 'rocky' %}cloud-utils-growpart{% endif %}"
+  - "{% if os_distribution == 'ubuntu' %}cloud-guest-utils{% endif %}"
 
 # StackHPC overcloud DIB image block device configuration.
 # This image layout conforms to the CIS partition benchmarks.