Restructure repository, removing old stuff

roles/packages/vars/main.yml

@@ -1,5 +1,5 @@
 ---
-packages_global:
+omni_packages_global:
   - automake
   - cmake
   - curl
@@ -14,7 +14,7 @@ packages_global:
   - vim
   - vim-minimal
 
-packages_fedora:
+omni_packages_fedora:
   - libselinux-python
   - git-lfs
   - readline-devel
@@ -23,7 +23,18 @@ packages_fedora:
   - python-virtualenv
   - python3-devel
 
-packages_centos:
+omni_packages_centos_8:
+  - bind-utils
+  - bash-completion
+  - nc
+  - nfs-utils
+  - python3
+  - python3-pip
+  - python3-setuptools
+  - python3-virtualenv
+  - wget
+
+omni_packages_centos_7:
   - bind-utils
   - bash-completion
   - nc