[shellprocess] Expand example and repair test

- Adding another example command broke the test which checks
  the number of entries in the example script.
- Add a second line of output to the example command, so it makes
  more sense to log it line-by-line.

src/modules/shellprocess/Tests.cpp

@@ -49,7 +49,7 @@ ShellProcessTests::testProcessListSampleConfig()
 
     CommandList cl( Calamares::YAML::mapToVariant( doc ).value( "script" ) );
     QVERIFY( !cl.isEmpty() );
-    QCOMPARE( cl.count(), 3 );
+    QCOMPARE( cl.count(), 4 );
 
     QCOMPARE( cl.at( 0 ).timeout(), Calamares::CommandLine::TimeoutNotSet() );
     QCOMPARE( cl.at( 2 ).timeout(), 3600s );  // slowloris

src/modules/shellprocess/shellprocess.conf

@@ -130,7 +130,7 @@ script:
     - "/usr/bin/true"
     - command: "/usr/local/bin/slowloris"
       timeout: 3600
-    - command: "echo -e '\e[33;2mred\e[33;0m'"
+    - command: "echo -e '\e[33;2mred\e[33;0m' ; echo second line"
       verbose: true
 
 # You can change the description of the job (as it is displayed in the