Relax the length constraints of cluster, role and role group name

[siegfriedweber]

Description

Relax the length constraints of cluster, role and role group name

Some operators use long role names like dagprocessor and middlemanager. Increasing the length of role names would require decreasing the length of cluster or role group name. These length constraints are already so tight that they could break existing cluster configurations. Instead, the length constraints were relaxed: ClusterName is now up to 40 characters, RoleName and RoleGroupName are up to 63 characters each, according to RFC 1123 label names. In turn, if the qualified role group name length exceeds its limit of 52 characters, it is truncated and a hash is added.

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