Make cilium tests pass (#4660)

Cilium requires a high kernel. rhel7 and centos7 are too low, so they are removed.
Bumping ubuntu to ubuntu-1804

Change-Id: Ib1bffa45b8f9ed0ba500f751714372b3a3f7878b

.gitlab-ci/gce.yml

@@ -146,7 +146,7 @@ gce_coreos-cilium:
   except: ['triggers']
   only: ['master', /^pr-.*$/]
 
-gce_ubuntu-cilium-sep:
+gce_ubuntu18-cilium-sep:
   stage: deploy-special
   <<: *gce
   when: manual

.gitlab-ci/packet.yml

@@ -73,7 +73,7 @@ packet_ubuntu-contiv-sep:
   except: ['triggers']
   only: ['master', /^pr-.*$/]
 
-packet_ubuntu-cilium-sep:
+packet_ubuntu18-cilium-sep:
   stage: deploy-special
   <<: *packet
   when: manual
@@ -108,20 +108,6 @@ packet_centos7-calico-ha:
   except: ['triggers']
   only: ['master', /^pr-.*$/]
 
-packet_centos7-cilium:
-  stage: deploy-special
-  <<: *packet
-  when: manual
-  except: ['triggers']
-  only: ['master', /^pr-.*$/]
-
-packet_rhel7-cilium:
-  stage: deploy-special
-  <<: *packet
-  when: manual
-  except: ['triggers']
-  only: ['master', /^pr-.*$/]
-
 packet_centos7-kube-router:
   stage: deploy-special
   <<: *packet