This removes the spec and updates the lang package usage to make use of
passing in the runtime as a parameter.
It removes all direct dependendencies on the flux runtime from the http
package.
The tasks subsystem will now use the flux language service to parse and
evaluate flux instead of directly interacting with the parser or
runtime. This helps break the dependency on the libflux parser for the
base influxdb package.
This includes the task notification packages which were changed at the
same time.
Jonathan A. Sternberg