Limit GCE tag for role to 63 chars

[hakman]

Some tests still fail:
https://prow.k8s.io/view/gs/kubernetes-jenkins/logs/e2e-kops-grid-gce-calico-u2004-k22-containerd/1540027335678365696

W0623 17:44:09.192151    6112 executor.go:139] error running task "FirewallRule/master-to-master-e2e-e2e-kops-grid-gce-calico-u2004-k22--1m2qc6" (9m46s remaining to succeed): error creating FirewallRule: googleapi: Error 400: Invalid value for field 'resource.sourceTags[0]': 'e2e-e2e-kops-grid-gce-calico-u2004-k22-containerd-k8s-local-k8s-io-role-master'. Must be a match of regex '(?:[a-z](?:[-a-z0-9]{0,61}[a-z0-9])?)'
More details:
Reason: invalid, Message: Invalid value for field 'resource.sourceTags[0]': 'e2e-e2e-kops-grid-gce-calico-u2004-k22-containerd-k8s-local-k8s-io-role-master'. Must be a match of regex '(?:[a-z](?:[-a-z0-9]{0,61}[a-z0-9])?)'
Reason: invalid, Message: Invalid value for field 'resource.targetTags[0]': 'e2e-e2e-kops-grid-gce-calico-u2004-k22-containerd-k8s-local-k8s-io-role-master'. Must be a match of regex '(?:[a-z](?:[-a-z0-9]{0,61}[a-z0-9])?)'

/cc @rifelpet @justinsb

[hakman]

/test pull-kops-e2e-k8s-gce

[k8s-ci-robot]

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