[rel-v8r0]
*Core
FIX: (7296) convert exception object to string representation in ElasticSearchDB
FIX: (7272) createClient: also look at HandlerMixin classes to find `export_`ed functions. Fixes the client Documentation creation, fixes 7265
*DataManagementSystem
CHANGE: (7296) default proxy lifetime for FTS is 36h and force the redelegation when 12h are left
*WorkloadManagement
FIX: (7285) WMSUtilities supports VO-specific token tags
NEW: (7266) SiteDirector - added preinstalledEnv and preinstalledEnvPrefix pilot options
*FrameworkSystem
FIX: (7277) show status SysAdminCLI KeyError
*WorkloadManagementSystem
FIX: (7276) JobStatus: allow WAITING -> KILLED
FIX: (7262) SiteDirector: add the --wnVO option (backporting))
*docs
FIX: (7275) clarify how to install TokenManager in v8