Investigate Liberty second start time in devc

[ericglau]

In regular dev mode, if you start Liberty the second time (e.g. restart the server), the second start is faster than the first.

In devc, the second start takes the same time as initial start because it is using a new container, so does not benefit from cached features and the SharedClassCache created in the first start.

Investigate how the second start can be improved in devc. This may include caching the workarea and SCC, and creating volumes to use for those to avoid bind mounts (see #1020).

[ericglau]

Consider letting OPENJ9_SCC betrue and either bind mounting the SCC to a local directory or using a volume for it.

cc @yeekangc