Merge ~barryprice/turnip:master into turnip:master

[Barry Price]

Reformat our E2E check hint to avoid using parentheses, which Nagios considers illegal

[Colin Watson (cjwatson)]

review: Approve

diff --git a/charm/layer/turnip-base/lib/charms/turnip/base.py b/charm/layer/turnip-base/lib/charms/turnip/base.py
index 4cd1f55..39e0fcc 100644
--- a/charm/layer/turnip-base/lib/charms/turnip/base.py
+++ b/charm/layer/turnip-base/lib/charms/turnip/base.py
@@ -320,7 +320,7 @@ def add_nagios_e2e_checks(nagios):
         nagios.add_check(
             [os.path.join(nrpe_dir(), 'check_git_refs'), url],
             name='check_turnip_git_refs_{}'.format(i),
-            description='Git E2E {} (hint: check nfs-ganesha status)'.format(
+            description='Git E2E {} - hint: check nfs-ganesha status'.format(
                 url),
             context=config['nagios_context'])