Feat pkr tmpl proxy almalinux

Closes #130 (closed)

Make changes to proxy packer template so that it runs without any issues as we move the base OS from Centos to Almalinux

openstack-proxy/nodeimage.pkr.hcl

@@ -38,10 +38,9 @@ build {
 
   provisioner "shell" {
     inline = [
-      "sudo sed -i 's/^mirrorlist/#mirrorlist/g' /etc/yum.repos.d/CentOS-*",
-      "sudo sed -i 's|#baseurl=http://mirror.centos.org|baseurl=http://vault.centos.org|g' /etc/yum.repos.d/CentOS-*",
       "sudo yum install -y epel-release",
-      "sudo yum install -y libselinux-python3 python3 tmux vim git bash-completion curl wget unzip",
+      "sudo dnf config-manager --set-enabled crb",
+      "sudo yum install -y libselinux-python3 python3 python3-pip tmux vim git bash-completion curl wget unzip",
       "sudo python3 -m pip install --upgrade pip",
       "sudo pip3 install s3cmd==2.3.0 ansible==4.10.0 python-openstackclient==5.8.0"
     ]