CI: system tests: instrument to allow failure analysis

Two tests failing in gating but never CI; add some debug
instrumentation to make it possible to find out what
is going on

Signed-off-by: Ed Santiago <santiago@redhat.com>

test/system/040-ps.bats

@@ -144,18 +144,24 @@ load helpers
 
     # Ok this here is basically a way to reproduce a "leaked" podman build buildah
     # container without having to kill any process and usage of sleep.
+    echo;echo "$_LOG_PROMPT buildah from $IMAGE"
     run buildah from $IMAGE
-    assert "$status" -eq 0 "buildah from successfully"
+    echo "$output"
+    assert "$status" -eq 0 "status of buildah from"
     buildah_cid="$output"
 
     # Commit new image so we have something to prune.
+    echo;echo "$_LOG_PROMPT buildah commit $buildah_cid"
     run buildah commit $buildah_cid
-    assert "$status" -eq 0 "buildah commit successfully"
+    echo "$output"
+    assert "$status" -eq 0 "status of buildah commit"
     buildah_image_id="${lines[-1]}"
 
     # Create new buildah container with new image so that one can be pruned directly.
+    echo;echo "$_LOG_PROMPT buildah from $buildah_image_id"
     run buildah from "$buildah_image_id"
-    assert "$status" -eq 0 "buildah from new buildah image successfully"
+    echo "$output"
+    assert "$status" -eq 0 "status of buildah from new buildah image"
 
     # We have to mount the container to trigger the "container .* is mounted" check below.
     local unshare=
@@ -163,8 +169,10 @@ load helpers
         # rootless needs unshare for mounting
         unshare="buildah unshare"
     fi
+    echo;echo "$_LOG_PROMPT $unshare buildah mount $buildah_cid"
     run $unshare buildah mount "$buildah_cid"
-    assert "$status" -eq 0 "buildah mount container successfully"
+    echo "$output"
+    assert "$status" -eq 0 "status of buildah mount container"
 
     run_podman ps -a
     is "${#lines[@]}" "1" "podman ps -a does not see buildah containers"

test/system/260-sdnotify.bats

@@ -417,11 +417,17 @@ ignore"
     is "$output" "0" "container exited cleanly after sending READY message"
 
     wait_for_file_content $_SOCAT_LOG "READY=1"
-    assert "$(< $_SOCAT_LOG)" =~ "MAINPID=.*
+
+    # (for debugging)
+    echo;echo "$_LOG_PROMPT cat $_SOCAT_LOG"
+    run cat $_SOCAT_LOG
+    echo "$output"
+
+    assert "$output" =~ "MAINPID=.*
 READY=1" "sdnotify sent MAINPID and READY"
 
     # Make sure that Podman is the service's MainPID
-    main_pid=$(head -n1 $_SOCAT_LOG | awk -F= '{print $2}')
+    main_pid=$(head -n1 <<<"$output" | awk -F= '{print $2}')
     is "$(</proc/$main_pid/comm)" "podman" "podman is the service mainPID ($main_pid)"
     _stop_socat