This commit moves parent pid process from the webapp package to the boot
script. This means that daemonized apps without webapp will also exit
when the runner exits, if run from the runner. (For example, several
self-tests such as 'autoupdate' no longer leak node processes.) This is
controlled via the $METEOR_PARENT_PID environment variable instead of
from command line arguments, in order to make fewer assumptions about
how Meteor apps process arguments.
This also drops the old --keepalive support (which already has stopped
being used by the dev mode runner or any MDG deployment platforms).
Neither --parent-pid nor --keepalive were documented beforehand, and
--keepalive was already deprecated before 1.0.
These flags used to also incidentally trigger printing the LISTENING
line; this is now controlled by $METEOR_PRINT_ON_LISTEN.
Fixes#3315.
Mutating global state in tests is still not a good idea. (Specifically,
in the previous version of the test, changing the value of
`WebAppInternals.inlineScriptsAllowed()` could mess with other
client-side tests that depend on it being one way or another -- of which
there are currently probably none, but there could be in theory.)
Instead, export the exact things we want to test (boilerplate HTML
generation and the static file handler). Now we are still mutating the
global `inlineScriptsAllowed()` state, but we don't yield before setting
it back to what it was.
Also simplify the reload-safetybelt test: instead of sending an HTTP
request, just check that the script gets adding to
`WebAppInternals.additionalStaticJs`.
Now webapp doesn't need to know anything about the reload safetybelt; it
just exposes a generic interface that any package can use to include
additional static JS (inlined when possible) in the boilerplate
HTML. reload-safetybelt uses this interface, instead of webapp
weak-depending on reload-safetybelt.
