Fixed rapide-rift_pipe.py to itereate over injections
fixed issue https://git.ligo.org/rapidpe-rift/rapidpe-rift-submission-scripts/-/issues/12
test runs:
injections: /home/vinaya.valsan/rapidPE/RapidPE_RIFT_Developments/RapidPE-RIFT_forks_sample_MDC/rapidpe-rift-submission-scripts/output/test_injections
event: /home/vinaya.valsan/rapidPE/RapidPE_RIFT_Developments/RapidPE-RIFT_forks_sample_MDC/rapidpe-rift-submission-scripts/output/rpe_pipe_test1/20220617_gstlal_20190425_G330564