update expected output to merge regexes with backreferences

Author: dirk-thomas

composition/test/composition_all.regex

@@ -1,2 +1,3 @@
-I heard: \[Hello World: \d+\]
+Publishing: 'Hello World: (\d+)'(\n.*)*I heard: \[Hello World: \1\]
+Incoming request: \[a: \d+, b: \d+\]
 Got result: \[\d+\]

composition/test/composition_pubsub.regex

@@ -1 +1 @@
-I heard: \[Hello World: \d+\]
+Publishing: 'Hello World: (\d+)'(\n.*)*I heard: \[Hello World: \1\]

intra_process_demo/test/cyclic_pipeline.regex

@@ -1,4 +1,3 @@
-Incrementing and sending with value: (\d+), and address: (0x([A-Z]|\d)+)
-Received message with value:         \1, and address: \2
+Incrementing and sending with value: (\d+), and address: (0x([A-Z]|\d)+)(\n.*)*Received message with value:         \1, and address: \2
   sleeping for 1 second...
   done.

intra_process_demo/test/two_node_pipeline.regex

@@ -1,2 +1 @@
-Published message with value: (\d+), and address: (0x([A-Z]|\d)+)
- Received message with value: \1, and address: \2
+Published message with value: (\d+), and address: (0x([A-Z]|\d)+)(\n.*)* Received message with value: \1, and address: \2