modification to p_astro, included mass gap

• p_astro reads mean values from emfollow/data to compute values

• mass gap category included

• unittests changed/added

@shaon.ghosh @shasvath.kapadia

gwcelery/conf/__init__.py

@@ -152,6 +152,11 @@ p_astro_gstlal_ln_likelihood_threshold = 6
 
 p_astro_gstlal_ranking_pdf = '/home/gstlalcbc/observing/3/online/trigs/rankingstat_pdf.xml.gz'  # noqa: E501
 
+pastro_url = 'http://emfollow.ldas.cit/data/means.json'
+"""URL for mean values of Poisson counts using which pastro
+is computed
+"""
+
 low_latency_frame_types = {'H1': 'H1_O2_llhoft',
                            'L1': 'L1_O2_llhoft',
                            'V1': 'V1_O2_llhoft'}