feat(python): insecure cookie rule (CWE-614) #1244

Job	Run time
build (javascript/express)	2m 8s
build (javascript/hapi)	15s
build (javascript/lang)	3m 21s
build (javascript/node)	17s
build (javascript/react)	31s
build (javascript/third_parties)	1m 54s
build (ruby/lang)	4m 8s
build (ruby/rails)	1m 36s
build (ruby/third_parties)	3m 23s
build (java/lang)	3m 0s
build (java/spring)	17s
build (java/android)	17s
build (java/third_parties)	32s
build (php/lang)	5m 1s
build (php/symfony)	56s
build (php/third_parties)	1m 5s
build (python/lang)	34s
build (go/lang)	1m 1s
build (go/gosec)	2m 10s
build (go/gorilla)	15s
build (go/third_parties)	40s
	33m 21s

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