change max len of cluster name to 21 to avoid hitting max len for AWS ELB name, which is 32 (#893)
change max len of cluster name to 21 to avoid hitting max len for AWS ELB name, which is 32 (#893)


samsung-cnct/k2,samsung-cnct/kraken-lib,alejandroEsc/k2,leahnp/k2,leahnp/k2,alejandroEsc/k2,samsung-cnct/kraken-lib,yenicapotediaz/k2,yenicapotediaz/k2,samsung-cnct/k2,samsung-cnct/kraken-lib