Merge ~adam-collard/review-tools:lp1922030-add-install-mode into review-tools:master

[Adam Collard]

LP #1922030: Add install-mode to known optional fields for daemons

[Alex Murray (alexmurray)]

Thanks, we should also add something to validate this in sr_lint.py ala the existing `check_apps_refresh_mode` and then a unit test as well. I'll see what I can do since I realise this is probably a bit too much to expect from a nice drive-by MR like this - cheers.

[Alex Murray (alexmurray)]

re validation etc - I have submitted this follow-on MR - https://code.launchpad.net/~alexmurray/review-tools/+git/review-tools/+merge/400620

[Alex Murray (alexmurray)]

Also I merged this already as 0602ea8bbc1750d05d3cf71d3b3af094708384c5

review: Approve

diff --git a/reviewtools/sr_common.py b/reviewtools/sr_common.py
index ec77a5d..028522a 100644
--- a/reviewtools/sr_common.py
+++ b/reviewtools/sr_common.py
@@ -105,6 +105,7 @@ class SnapReview(Review):
         "bus-name",  # May deprecate: https://forum.snapcraft.io/t/support-for-daemon-dbus/8855/11
         "daemon",
         "daemon-scope",
+        "install-mode",
         "ports",
         "post-stop-command",
         "refresh-mode",