Log nested structures from the configuration

[linux019]

Before

I0905 12:49:46.347520 1093850 structlog.go:46]   	adapters[rise].aliasOf: 
I0905 12:49:46.347524 1093850 structlog.go:39]   	adapters[rise].whiteLabelOnly: false
I0905 12:49:46.347528 1093850 structlog.go:39]   	adapters[rise].disabled: false
I0905 12:49:46.347532 1093850 structlog.go:46]   	adapters[rise].endpoint: https://pbs.yellowblue.io/pbs
I0905 12:49:46.347536 1093850 structlog.go:46]   	adapters[rise].extra_info: 
I0905 12:49:46.347540 1093850 structlog.go:46]   	adapters[rise].openrtb: <*config.OpenRTBInfo Value>
I0905 12:49:46.347543 1093850 structlog.go:46]   	adapters[rise].maintainer: <*config.MaintainerInfo Value>
I0905 12:49:46.347547 1093850 structlog.go:46]   	adapters[rise].capabilities: <*config.CapabilitiesInfo Value>
I0905 12:49:46.347552 1093850 structlog.go:39]   	adapters[rise].modifyingVastXmlAllowed: true
I0905 12:49:46.347555 1093850 structlog.go:46]   	adapters[rise].debug: <*config.DebugInfo Value>
I0905 12:49:46.347559 1093850 structlog.go:35]   	adapters[rise].gvlVendorID: 1043
I0905 12:49:46.347563 1093850 structlog.go:46]   	adapters[rise].userSync: <*config.Syncer Value>
I0905 12:49:46.347571 1093850 structlog.go:39]   	adapters[rise].experiment.adsCert.enabled: false
I0905 12:49:46.347577 1093850 structlog.go:46]   	adapters[rise].xapi.username: 
I0905 12:49:46.347580 1093850 structlog.go:60]   	adapters[rise].xapi.password: <REDACTED>
I0905 12:49:46.347584 1093850 structlog.go:46]   	adapters[rise].xapi.tracker: 
I0905 12:49:46.347588 1093850 structlog.go:46]   	adapters[rise].platform_id: 
I0905 12:49:46.347592 1093850 structlog.go:46]   	adapters[rise].app_secret: 
I0905 12:49:46.347596 1093850 structlog.go:46]   	adapters[rise].endpointCompression: gzip

With new changes:

I0905 12:51:02.933423 1094280 structlog.go:46]   	adapters[rise].aliasOf: 
I0905 12:51:02.933427 1094280 structlog.go:39]   	adapters[rise].whiteLabelOnly: false
I0905 12:51:02.933431 1094280 structlog.go:39]   	adapters[rise].disabled: false
I0905 12:51:02.933434 1094280 structlog.go:46]   	adapters[rise].endpoint: https://pbs.yellowblue.io/pbs
I0905 12:51:02.933438 1094280 structlog.go:46]   	adapters[rise].extra_info: 
I0905 12:51:02.933443 1094280 structlog.go:46]   	adapters[rise].maintainer.email: [email protected]
I0905 12:51:02.933449 1094280 structlog.go:46]   	adapters[rise].capabilities.app.mediaTypes: <[]openrtb_ext.BidType Value>
I0905 12:51:02.933454 1094280 structlog.go:46]   	adapters[rise].capabilities.site.mediaTypes: <[]openrtb_ext.BidType Value>
I0905 12:51:02.933459 1094280 structlog.go:39]   	adapters[rise].modifyingVastXmlAllowed: true
I0905 12:51:02.933464 1094280 structlog.go:35]   	adapters[rise].gvlVendorID: 1043
I0905 12:51:02.933469 1094280 structlog.go:46]   	adapters[rise].userSync.key: 
I0905 12:51:02.933475 1094280 structlog.go:46]   	adapters[rise].userSync.supports: <[]string Value>
I0905 12:51:02.933479 1094280 structlog.go:46]   	adapters[rise].userSync.iframe.url: https://pbs-cs.yellowblue.io/pbs-iframe?gdpr={{.GDPR}}&gdpr_consent={{.GDPRConsent}}&us_privacy={{.USPrivacy}}&gpp={{.GPP}}&gpp_sid={{.GPPSID}}&redirect={{.RedirectURL}}
I0905 12:51:02.933483 1094280 structlog.go:46]   	adapters[rise].userSync.iframe.redirect_url: 
I0905 12:51:02.933486 1094280 structlog.go:46]   	adapters[rise].userSync.iframe.external_url: 
I0905 12:51:02.933490 1094280 structlog.go:46]   	adapters[rise].userSync.iframe.user_macro: [PBS_UID]
I0905 12:51:02.933494 1094280 structlog.go:46]   	adapters[rise].userSync.external_url: 
I0905 12:51:02.933499 1094280 structlog.go:46]   	adapters[rise].userSync.format_override: 
I0905 12:51:02.933507 1094280 structlog.go:39]   	adapters[rise].experiment.adsCert.enabled: false
I0905 12:51:02.933513 1094280 structlog.go:46]   	adapters[rise].xapi.username: 
I0905 12:51:02.933516 1094280 structlog.go:60]   	adapters[rise].xapi.password: <REDACTED>
I0905 12:51:02.933519 1094280 structlog.go:46]   	adapters[rise].xapi.tracker: 
I0905 12:51:02.933522 1094280 structlog.go:46]   	adapters[rise].platform_id: 
I0905 12:51:02.933526 1094280 structlog.go:46]   	adapters[rise].app_secret: 
I0905 12:51:02.933530 1094280 structlog.go:46]   	adapters[rise].endpointCompression: gzip