MB-8383 Count ret_meta commands as their ordinary counterparts.
MB-8383 Count ret_meta commands as their ordinary counterparts.

And don't count them as xdcr ops.

Change-Id: Ic0eae1f5f9bdb95cfcb1ab78cb0ca22336c5ce0c
Reviewed-on: http://review.couchbase.org/26806
Tested-by: Aliaksey Artamonau <3c875bcfb3adf2a65b2ae7686ca921e6c9433147@gmail.com>
Reviewed-by: Aliaksey Kandratsenka <340b8e09ca65cd3fc686427fcfed17e87eaf61e2@gmail.com>

t3rm1n4l/ns_server,t3rm1n4l/ns_server,mschoch/ns_server,nimishzynga/ns_server,pavel-blagodov/ns_server,daverigby/ns_server,mschoch/ns_server,membase/ns_server,t3rm1n4l/ns_server,ceejatec/ns_server,nimishzynga/ns_server,nimishzynga/ns_server,vzasade/ns_server,vzasade/ns_server,nimishzynga/ns_server,pavel-blagodov/ns_server,membase/ns_server,mschoch/ns_server,daverigby/ns_server,membase/ns_server,membase/ns_server,mschoch/ns_server,t3rm1n4l/ns_server,pavel-blagodov/ns_server,ceejatec/ns_server,daverigby/ns_server,daverigby/ns_server,ceejatec/ns_server,pavel-blagodov/ns_server,membase/ns_server,vzasade/ns_server,membase/ns_server,mschoch/ns_server,nimishzynga/ns_server,ceejatec/ns_server,ceejatec/ns_server,nimishzynga/ns_server,ceejatec/ns_server,daverigby/ns_server,t3rm1n4l/ns_server,vzasade/ns_server,mschoch/ns_server