tests: properly fix fs/kmsg test

It was broken likely due to `private-dev` being added to default.profile
on commit 307dad5 ("adding private-tmp and private-dev to
default.profile", 2023-08-20).

So ignore `private-dev` in the test and make sure to run the tests when
default.profile changes.

This amends commit 75cefd5 ("tests: fix error when /dev/kmsg is
missing", 2023-08-21).

.github/workflows/test.yml

@@ -17,6 +17,7 @@ on:
       - config.sh.in
       - configure
       - configure.ac
+      - etc/profile-a-l/default.profile
       - src/firecfg/firecfg.config
   pull_request:
     paths:
@@ -32,6 +33,7 @@ on:
       - config.sh.in
       - configure
       - configure.ac
+      - etc/profile-a-l/default.profile
       - src/firecfg/firecfg.config
 
 permissions:  # added using https://github.com/step-security/secure-workflows

test/fs/kmsg.exp

@@ -7,7 +7,7 @@ set timeout 10
 spawn $env(SHELL)
 match_max 100000
 
-send -- "firejail\r"
+send -- "firejail --ignore=private-dev\r"
 expect {
 	timeout {puts "TESTING ERROR 1\n";exit}
 	-re "Child process initialized in \[0-9\]+.\[0-9\]+ ms"
@@ -17,7 +17,6 @@ sleep 1
 send -- "cat /dev/kmsg\r"
 expect {
 	timeout {puts "TESTING ERROR 2\n";exit}
-	"No such file or directory" # FIXME: Needed in CI
 	"Permission denied"
 }
 after 100