Missing dependency on the Oracle Client libraries

Description

The gemos query vfat command uses the cx_Oracle Python library to retrieve the VFAT calibration constants from the CMS Oracle DB. The cx_Oracle Python library requires the presence of the Oracle Client libraries at runtime. They are packages as RPM in either the CERN-only repository or the xDAQ repositories. The former is included in the default search path while the latter requires setting the LD_LIBRARY_PATH environment variable. A basic default cmsgemos-analysis RPM installation, such as the one in the CMS cluster, will result in a non-working command.

Possible fixes

Update the cx_Oracle library to the new python-oracledb one and try using the new "Thin" mode, which shouldn't require any external dependency. If not working, add a dependency on the Oracle Client libraries to the RPM.