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