Update vcap_common to 3.0.1 and membrane to 1.0

This also updates steno to 1.2.4 as part of the cascade, which removes grape and its dependencies.

Signed-off-by: Tammer Saleh <tammer@pivotallabs.com>
Stop publishing config in varz

* Lock vcap_common to 4.x

[#65300526]

Signed-off-by: Eric Malm <emalm@pivotallabs.com>