MDCB Env vars

[joshblakeley]

Need breaking down into sensible categories:

TYK_MDCB_LISTENPORT
TYK_MDCB_HEALTHCHECKPORT
TYK_MDCB_HTTPPROFILE
TYK_MDCB_SERVEROPTIONS_USESSL
TYK_MDCB_SERVEROPTIONS_CERTIFICATE_CERTFILE
TYK_MDCB_SERVEROPTIONS_CERTIFICATE_KEYFILE
TYK_MDCB_SERVEROPTIONS_MINVERSION
TYK_MDCB_SERVEROPTIONS_CIPHERS
TYK_MDCB_SECURITY_PRIVATECERTIFICATEENCODINGSECRET
TYK_MDCB_STORAGE_TYPE
TYK_MDCB_STORAGE_HOST
TYK_MDCB_STORAGE_PORT
TYK_MDCB_STORAGE_MASTERNAME
TYK_MDCB_STORAGE_USERNAME
TYK_MDCB_STORAGE_PASSWORD
TYK_MDCB_STORAGE_DATABASE
TYK_MDCB_STORAGE_MAXIDLE
TYK_MDCB_STORAGE_MAXACTIVE
TYK_MDCB_STORAGE_ENABLECLUSTER
TYK_MDCB_STORAGE_HOSTS
TYK_MDCB_STORAGE_ADDRS
TYK_MDCB_STORAGE_REDISUSESSL
TYK_MDCB_STORAGE_REDISSSLINSECURESKIPVERIFY
TYK_MDCB_STORAGE_DEBUG
TYK_MDCB_ANALYTICSCONFIG_MONGOURL
TYK_MDCB_ANALYTICSCONFIG_MONGOUSESSL
TYK_MDCB_ANALYTICSCONFIG_MONGOSSLINSECURESKIPVERIFY
TYK_MDCB_HASHKEYS
TYK_MDCB_SESSIONTIMEOUT
TYK_MDCB_FORWARDANALYTICSTOPUMP
TYK_MDCB_DONTSTORESELECTIVE
TYK_MDCB_DONTSTOREAGGREGATES
TYK_MDCB_LICENSE
TYK_MDCB_AGGREGATESIGNORETAGS
TYK_MDCB_TRACKALLPATHS
TYK_MDCB_STOREANALYTICSPERMINUTE
TYK_MDCB_IGNORETAGPREFIXLIST
TYK_MDCB_THRESHOLDLENTAGLIST