XD-1199 Updating filejdbc batch job

- renaming job to files2jdbc to refelect the purpose of the job

- changing config to accept job parameters for 'dir' and 'pattern' when job is triggered instead of 'resources' parameter

- can be triggered with:
  stream create --name files --definition "trigger --payload='{"dir":"/data","pattern":"*.csv"}' > queue:job:myjob"