Move etcd, logger, crypto into their own packages (#8366)

- Deprecates _MINIO_PROFILER, `mc admin profile` does the job
- Move ENVs to common location in cmd/config/

cmd/globals.go

@@ -215,8 +215,6 @@ var (
 	globalCacheExpiry = 90
 	// Max allowed disk cache percentage
 	globalCacheMaxUse = 80
-	// Disk cache KMS Key
-	globalCacheKMSKeyID string
 	// Initialized KMS configuration for disk cache
 	globalCacheKMS crypto.KMS
 	// Allocated etcd endpoint for config and bucket DNS.
@@ -230,9 +228,6 @@ var (
 	// Usage check interval value.
 	globalUsageCheckInterval = globalDefaultUsageCheckInterval
 
-	// KMS key id
-	globalKMSKeyID string
-
 	// GlobalKMS initialized KMS configuration
 	GlobalKMS crypto.KMS