Add worker property prefix to CRLDownloadWorker properties

[W1RED1]

Describe your changes

Added worker property prefix to CRL download worker properties PROP_IGNORE_NEXT_UPDATE and PROP_MAX_DOWNLOAD_SIZE as described in #994

How has this been tested?

1. Deployed changes to Wildfly

2. Created CRL download worker service via admin web as documented

3. Verified requests received and database contents

4. Deleted service via admin web and re-created service via CLI

sudo bin/ejbca.sh service create CRLDownloadService 'workerClassPath=org.ejbca.core.model.services.workers.CRLDownloadWorker worker.caidstocheck=1830581008 worker.maxDownloadSize=1048576 worker.ignoreNextUpdate=true intervalClassPath=org.ejbca.core.model.services.intervals.PeriodicalInterval interval.periodical.unit=MINUTES interval.periodical.value=1 actionClassPath=org.ejbca.core.model.services.actions.NoAction active=true'
Modifying 'org.ejbca.core.model.services.ServiceConfiguration'...
Current value of workerClassPath is ''.
Updated field: workerClassPath
workerClassPath returned value 'org.ejbca.core.model.services.workers.CRLDownloadWorker'.
New field value: org.ejbca.core.model.services.workers.CRLDownloadWorker
Modifying 'org.ejbca.core.model.services.ServiceConfiguration'...
Updated worker property: worker.caidstocheck
New worker property value: 1830581008
Modifying 'org.ejbca.core.model.services.ServiceConfiguration'...
Updated worker property: worker.maxDownloadSize
New worker property value: 1048576
Modifying 'org.ejbca.core.model.services.ServiceConfiguration'...
Updated worker property: worker.ignoreNextUpdate
New worker property value: true
---- SNIP ----
New interval property value: MINUTES
Modifying 'org.ejbca.core.model.services.ServiceConfiguration'...
Updated interval property: interval.periodical.value
New interval property value: 1
---- SNIP ----
Updated field: active
active returned value 'true'.
New field value: true
Service created.

5. Re-verified requests received

Checklist before requesting a review

• I have performed a self-review of my code
• I have kept the patch limited to only change the parts related to the patch
• This change requires a documentation update

See also Contributing Guidelines.