Merge ~cjwatson/launchpad-bastion-scripts:in-model into launchpad-bastion-scripts:main

[Colin Watson]

Add in-model script

The way that we have multiple Juju models accessible from a single `stg-launchpad` user is inconvenient in some ways: it makes it hard to write shell one-liners that do something on the bastion, because you always have to source `~/.mojorc.qastaging` or `~/.mojorc.staging` first.

Add an `in-model` script that makes it easier to compose this sort of thing. For example, this allows running:

  ssh -t launchpad-bastion-ps5.internal sudo -iu stg-launchpad in-model qastaging juju status

[Guruprasad (lgp171188)]

review: Approve

diff --git a/in-model b/in-model
new file mode 100755
index 0000000..8c7df41
--- /dev/null
+++ b/in-model
@@ -0,0 +1,12 @@
+#! /bin/sh
+set -e
+
+# Run a command in a particular model.
+
+model="$1"
+shift
+
+# shellcheck disable=SC1090
+. "$HOME/.mojorc.$model"
+
+exec "$@"