closes CNVS-27597
We need to not slam consul for rarely changing data.
the '#find' method still gets the value from consul everytime.
Cache can be infinite or with timeout.
TEST PLAN:
1) have some data in consul for what the signing secret is for canvas
2) Make sure to query it (Canvas::Security::ServicesJwt.signing_secret)
3) change the consul data
4) query it again, it should not have updated
5) send a SIGHUP
6) query it again, it should have changed
Change-Id: I5b923b8e44ab90692e87969c494a7c65fafcad72
Reviewed-on: https://gerrit.instructure.com/73198
Reviewed-by: Cody Cutrer <cody@instructure.com>
Reviewed-by: Brian Palmer <brianp@instructure.com>
Tested-by: Jenkins
Reviewed-by: David Adams <dadams@instructure.com>
QA-Review: Jeremy Putnam <jeremyp@instructure.com>
Product-Review: Simon Williams <simon@instructure.com>
c9eae629ed