fix(ci): Avoid dates in integration tests

Turns out that ls skips the time if the timestamp is far enough in the past.

integration_tests/arch/basic_config/expected/1_output.txt

@@ -33,8 +33,7 @@ checking keyring...
 checking package integrity...
 Ok("# Dynamic linker/loader configuration.\n# See ld.so(8) and ldconfig(8) for details.\n\ninclude /etc/ld.so.conf.d/*.conf\ninclude /usr/lib/ld.so.conf.d/*.conf\n")
 Ok("# Dynamic linker/loader configuration.\n# See ld.so(8) and ldconfig(8) for details.\n\ninclude /etc/ld.so.conf.d/*.conf\ninclude /usr/lib/ld.so.conf.d/*.conf\n# HI!\n")
--rw-r--r-- 1 root root      1 Apr  7 18:02 arch-release
--rw-r--r-- 1 root root    411 Sep  6 23:15 os-release
+Hello world
 "output:"
 Ok("")
 "bor\nbar\nbar\nquux hi there\n"

integration_tests/arch/basic_config/expected/2_output.txt

@@ -19,8 +19,7 @@ INFO script{phase=Main}: konfigkoll_script::engine: Calling script
 Some(123)
 Ok("# Dynamic linker/loader configuration.\n# See ld.so(8) and ldconfig(8) for details.\n\ninclude /etc/ld.so.conf.d/*.conf\ninclude /usr/lib/ld.so.conf.d/*.conf\n")
 Ok("# Dynamic linker/loader configuration.\n# See ld.so(8) and ldconfig(8) for details.\n\ninclude /etc/ld.so.conf.d/*.conf\ninclude /usr/lib/ld.so.conf.d/*.conf\n# HI!\n")
--rw-r--r-- 1 root root      1 Apr  7 18:02 arch-release
--rw-r--r-- 1 root root    411 Sep  6 23:15 os-release
+Hello world
 "output:"
 Ok("")
 "bor\nbar\nbar\nquux hi there\n"

integration_tests/arch/basic_config/expected/3_output.txt

@@ -20,8 +20,7 @@ INFO script{phase=Main}: konfigkoll_script::engine: Calling script
 Some(123)
 Ok("# Dynamic linker/loader configuration.\n# See ld.so(8) and ldconfig(8) for details.\n\ninclude /etc/ld.so.conf.d/*.conf\ninclude /usr/lib/ld.so.conf.d/*.conf\n")
 Ok("# Dynamic linker/loader configuration.\n# See ld.so(8) and ldconfig(8) for details.\n\ninclude /etc/ld.so.conf.d/*.conf\ninclude /usr/lib/ld.so.conf.d/*.conf\n# HI!\n")
--rw-r--r-- 1 root root      1 Apr  7 18:02 arch-release
--rw-r--r-- 1 root root    411 Sep  6 23:15 os-release
+Hello world
 "output:"
 Ok("")
 "bor\nbar\nbar\nquux hi there\n"

integration_tests/arch/basic_config/main.rn

@@ -174,13 +174,12 @@ pub async fn phase_main(props, cmds, package_managers) {
     dbg(passwd.read_all_string());
 
     // Test command execution
-    let cmd = process::Command::new("ls");
-    cmd.arg("-l");
-    cmd.arg("/etc");
+    let cmd = process::Command::new("/usr/bin/echo");
+    cmd.arg("Hello world\nHi there\n");
     cmd.stdout(process::Stdio::piped());
     let child = cmd.spawn()?;
     let cmd2 = process::Command::new("grep");
-    cmd2.arg("release");
+    cmd2.arg("world");
     cmd2.stdin(child.stdout().unwrap().try_into_stdio()?);
     let child2 = cmd2.spawn()?;
     let output = child2.wait_with_output().await?;