Merge branch 'feat-update-default-flavor' into 'master'

Update the default flavor

See merge request rc/ohpc-packer!42

.gitlab-ci.yml

@@ -12,7 +12,7 @@ variables:
   PKR_VAR_build_image_name: "xdmod"
   PKR_VAR_ssh_username: "centos"
   PKR_VAR_ssh_keypair_name: "dev-keys"
-  PKR_VAR_flavor: "m1.medium"
+  PKR_VAR_flavor: "m1.medium-ruffner"
   PKR_VAR_source_image_name: "CentOS-7-x86_64-GenericCloud-1905"
   GIT_SUBMODULE_STRATEGY: recursive
   NUM_IMAGE_TO_KEEP: 5