feat(python): extend SQLi rules (#449) #1459

Job	Run time
build (javascript/express)	2m 17s
build (javascript/hapi)	14s
build (javascript/lang)	3m 26s
build (javascript/node)	14s
build (javascript/react)	25s
build (javascript/third_parties)	1m 55s
build (ruby/lang)	4m 10s
build (ruby/rails)	1m 35s
build (ruby/third_parties)	3m 23s
build (java/lang)	3m 2s
build (java/spring)	22s
build (java/android)	16s
build (java/third_parties)	33s
build (php/lang)	5m 3s
build (php/symfony)	55s
build (php/third_parties)	1m 9s
build (python/django)	41s
build (python/lang)	1m 46s
build (python/third_parties)	40s
build (go/lang)	1m 5s
build (go/gosec)	2m 9s
build (go/gorilla)	16s
build (go/third_parties)	40s
	36m 16s

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