package: update strong-supervisor to ^1.0.0
v2.9.1
Merge branch 'release/2.9.1' into production
Merge tag 'v2.9.1'

v2.9.1
Replace commit signing with CLA app

Remove references to commit signing from the CONTRIBUTING.md guide and
add a link to StrongLoop's online CLA tracker:
https://strongloop-cla.herokuapp.com/agreements/strongloop/strongloop
fixup! Replace commit signing with CLA app
fixup! Replace commit signing with CLA app