druid-docker-image: add DRUID_DIRS_TO_CREATE variable to customize directories created on startup (#10591)
druid-docker-image: add DRUID_DIRS_TO_CREATE variable to customize directories created on startup (#10591)

* druid-docker-image: add DRUID_DIRS_TO_CREATE variable to customize directories created on startup

* address review comment

* remove unintentional change
nishantmonu51/druid,monetate/druid,leventov/druid,gianm/druid,gianm/druid,jon-wei/druid,mghosh4/druid,jon-wei/druid,nishantmonu51/druid,druid-io/druid,jon-wei/druid,mghosh4/druid,gianm/druid,monetate/druid,druid-io/druid,leventov/druid,mghosh4/druid,nishantmonu51/druid,monetate/druid,leventov/druid,nishantmonu51/druid,jon-wei/druid,jon-wei/druid,nishantmonu51/druid,jon-wei/druid,monetate/druid,nishantmonu51/druid,druid-io/druid,druid-io/druid,monetate/druid,leventov/druid,monetate/druid,gianm/druid,mghosh4/druid,nishantmonu51/druid,mghosh4/druid,druid-io/druid,monetate/druid,gianm/druid,gianm/druid,jon-wei/druid,mghosh4/druid,leventov/druid,gianm/druid,mghosh4/druid