Variable dropxbox server host name
In the context of the migration to ALMA9 (e.g. RateMon in CMSONS-14755), the P5 sysadmins created a new separate EL9 dropbox server with hostname cmsdropboxel9.cms
(original: cmsdropbox.cms
).
The dropbox hostname is currently hard-coded in the templates in GotoCMSDropbox.go.
The changes in this MR make the dropbox hostname variable, which can then be declared in the CI/CD templates under a new DROPBOX_HOST
variable.