MB-7255: Don't change current directory location
MB-7255: Don't change current directory location

Lots of commands assume that bin directory is the current directory

Change-Id: I9fc05fe13f8384af461a34b391e7366ab608a3e8
Reviewed-on: http://review.couchbase.org/22826
Tested-by: Pavel Paulau <dd88eded64e90046a680e3a6c0828ceb8fe8a0e7@gmail.com>
Reviewed-by: Steve Yen <ef850f73f7832052d3c6d9b5ddd3a1716d9a57f1@gmail.com>

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