[End- to End Test code sprint] Add SEVIRI METEOSAT-8 and METEOSAT-11 (#765)

Spinning Enhanced Visible and InfraRed Imager (SEVIRI) from METEOSAT-8 and to METEOSAT-11 GDASApp end-to-end testing.

new files include:
parm/ioda/bufr2ioda//bufr2ioda_sevcsr.json : JSON containing data format, sensor/bufr2ioda_sevcsr.json, and satellite information
ush/ioda/bufr2ioda/bufr2ioda_sevcsr.py: bufr2ioda code for extracting SEVIRI METEOSAT-8 and METEOSAT-11 from BUFR

Author: Azadeh Gholoubi

parm/ioda/bufr2ioda/bufr2ioda_sevcsr.json

@@ -6,10 +6,10 @@
   "dump_directory"   : "{{ DMPDIR }}",
   "ioda_directory"   : "{{ COM_OBS }}",
   "subsets"          : [  ],
-  "data_description" : "NC005030 NESDIS SATWIND, GOES IR(LW);  NC005031 NESDIS SATWIND, GOES WV-IMG/DL; NC005032 NESDIS SATWIND, GOES VIS; NC005034 NESDIS SATWIND, GOES WV-IMG/CT; NC005039 NESDIS SATWIND, GOES IR(SW)", 
+  "data_description" : "NC021043 SEVIRI, Meteosat-11;  NC021043 SEVIRI, Meteosat-08", 
   "data_provider"    : "U.S. NOAA/NESDIS",
   "sensor_info"      : { "sensor_name": "SEVIRI",  "sensor_full_name": "Spinning Enhanced Visible Infra-Red Imager",  "sensor_id": 617 },
   "satellite_info"   : [
                           { "satellite_name": "m11", "satellite_full_name": "Meteosat-11", "satellite_id": 70, "launch time": "20150715" },
-                          { "satellite_name": "m08", "satellite_full_name": "Meteosat-11", "satellite_id": 55, "launch time": "20020828" } ]
+                          { "satellite_name": "m08", "satellite_full_name": "Meteosat-08", "satellite_id": 55, "launch time": "20020828" } ]
 }