Merge ~cjwatson/turnip:update-nrpe-interface-url into turnip:master

[Colin Watson]

Update nrpe-external-master-interface URL

The old repository seems to have vanished, but the relevant repository has now been recovered under the canonical-ols organization.

This should fix the failing `turnip-build-charm` Jenkins job (see e.g. https://jenkins.ols.canonical.com/online-services/job/turnip-build-charm/2115/console).

[Guillermo Gonzalez (verterok)]

+1

review: Approve

[Otto Co-Pilot (otto-copilot)]

Voting criteria not met
https://jenkins.ols.canonical.com/online-services/job/turnip/353/

[Colin Watson (cjwatson)]

Rubber-stamping this following @verterok's review to satisfy Jenkins.

review: Approve

[Otto Co-Pilot (otto-copilot)]

Running landing tests failed
https://jenkins.ols.canonical.com/online-services/job/turnip/354/

diff --git a/charm/dependencies.txt b/charm/dependencies.txt
index b0ee2a5..66e5dea 100644
--- a/charm/dependencies.txt
+++ b/charm/dependencies.txt
@@ -2,7 +2,7 @@ interface			@
 interface/rabbitmq		git+https://github.com/openstack/charm-interface-rabbitmq;revno=571f486
 interface/http			git+https://github.com/juju-solutions/interface-http;revno=4a232c69
 interface/mount			git+https://github.com/juju-solutions/interface-mount;revno=d5a2526f
-interface/nrpe-external-master	git+https://github.com/cmars/nrpe-external-master-interface;revno=20b2b9fb
+interface/nrpe-external-master	git+https://github.com/canonical-ols/nrpe-external-master-interface;revno=20b2b9fb
 
 layer				@
 layer/apt			git+https://git.launchpad.net/layer-apt;revno=cf78622e