Fix type in string join operation
Fix type in string join operation

Change-Id: I239ffdaa36c47179a73d1fa4b02341431e62ab3b

apmasell/flabbergast,flabbergast-config/flabbergast,apmasell/flabbergast,apmasell/flabbergast,apmasell/flabbergast,flabbergast-config/flabbergast,flabbergast-config/flabbergast,flabbergast-config/flabbergast,flabbergast-config/flabbergast,apmasell/flabbergast,apmasell/flabbergast