Fedora OS fixes

- Remove fedora25 and ciao-fedora25 (Fedora 25 is EOL and is no longer supported)
- Fix up hostname & download URL for fedora27
- Add fedora28

Signed-off-by: Ganesh Maharaj Mahalingam <[email protected]>

Author: Ganesh Maharaj Mahalingam

workloads/ciao-fedora25.yaml

@@ -1,7 +1,6 @@
 ---
-base_image_url: https://mirror.us-midwest-1.nexcess.net/fedora/releases/27/CloudImages/x86_64/images/Fedora-Cloud-Base-27-1.6.x86_64.qcow2
+base_image_url: https://download.fedoraproject.org/pub/fedora/linux/releases/27/CloudImages/x86_64/images/Fedora-Cloud-Base-27-1.6.x86_64.qcow2
 base_image_name: Fedora 27
-hostname: singlevm
 vm:
   disk_gib: 16
 ...

workloads/fedora27.yaml

@@ -1,7 +1,6 @@
 ---
-base_image_url: https://download.fedoraproject.org/pub/fedora/linux/releases/25/CloudImages/x86_64/images/Fedora-Cloud-Base-25-1.3.x86_64.qcow2
-base_image_name: Fedora 25
-hostname: singlevm
+base_image_url: https://download.fedoraproject.org/pub/fedora/linux/releases/28/Cloud/x86_64/images/Fedora-Cloud-Base-28-1.1.x86_64.qcow2
+base_image_name: Fedora 28
 vm:
   disk_gib: 16
 ...
@@ -53,6 +52,8 @@ runcmd:
 
 users:
   - name: {{.User}}
+    uid: "{{.UID}}"
+    gid: "{{.GID}}"
     gecos: CC Demo User
     lock-passwd: true
     shell: /bin/bash