ci-operator/templates/openshift: Drop us-east-1c

We're currently hitting a lot of these.  Over the past 24 hours [1]:

  $ curl -s 'http://localhost:8000/search?name=-e2e-aws&.&q=level%3Derror.*timeout+while+waiting+for+state' | jq -r '. | to_entries[].value[] | to_entries[].value[]' | sed 's/(i-[^)]*/(i-.../;s/(igw-[^)]*/(igw-.../;s/\(master\|nat_gw\|private_routing\|route_net\)\.[0-9]/\1.../' | sort | uniq -c | sort -n
       2 level=error msg="\t* aws_instance.master...: Error waiting for instance (i-...) to become ready: timeout while waiting for state
      10 level=error msg="\t* aws_security_group.bootstrap: timeout while waiting for state
      38 level=error msg="\t* aws_route.igw_route: Error creating route: timeout while waiting for state
      58 level=error msg="\t* aws_internet_gateway.igw: error attaching EC2 Internet Gateway (igw-...): timeout while waiting for state
      76 level=error msg="\t* aws_route_table_association.private_routing...: timeout while waiting for state
      90 level=error msg="\t* aws_route_table_association.route_net...: timeout while waiting for state
     164 level=error msg="\t* aws_route.to_nat_gw...: Error creating route: timeout while waiting for state

Dropping to two zones will reduce our API load for the per-subnet
to_nat_gw routes and route-table associations, which are our leading
breakages.

Generated with:

  $ sed -i '/us-east-1c/d' $(git grep -l us-east-1c)

[1]: https://github.com/wking/openshift-release/tree/debug-scripts/d3

Author: wking

ci-operator/templates/openshift/installer/cluster-launch-installer-console.yaml

@@ -241,7 +241,6 @@ objects:
               zones:
               - us-east-1a
               - us-east-1b
-              - us-east-1c
         compute:
         - name: worker
           replicas: 3
@@ -250,7 +249,6 @@ objects:
               zones:
               - us-east-1a
               - us-east-1b
-              - us-east-1c
         networking:
           clusterNetwork:
           - cidr: 10.128.0.0/14

ci-operator/templates/openshift/installer/cluster-launch-installer-e2e.yaml

@@ -243,7 +243,6 @@ objects:
               zones:
               - us-east-1a
               - us-east-1b
-              - us-east-1c
         compute:
         - name: worker
           replicas: 3
@@ -252,7 +251,6 @@ objects:
               zones:
               - us-east-1a
               - us-east-1b
-              - us-east-1c
         networking:
           clusterNetwork:
           - cidr: 10.128.0.0/14

ci-operator/templates/openshift/installer/cluster-launch-installer-src.yaml

@@ -237,7 +237,6 @@ objects:
               zones:
               - us-east-1a
               - us-east-1b
-              - us-east-1c
         compute:
         - name: worker
           replicas: 3
@@ -246,7 +245,6 @@ objects:
               zones:
               - us-east-1a
               - us-east-1b
-              - us-east-1c
         networking:
           clusterNetwork:
           - cidr: 10.128.0.0/14

ci-operator/templates/openshift/openshift-ansible/cluster-scaleup-e2e-40.yaml

@@ -328,7 +328,6 @@ objects:
               zones:
               - us-east-1a
               - us-east-1b
-              - us-east-1c
         compute:
         - name: worker
           replicas: 3
@@ -337,7 +336,6 @@ objects:
               zones:
               - us-east-1a
               - us-east-1b
-              - us-east-1c
         networking:
           clusterNetwork:
           - cidr: 10.128.0.0/14