Update rtf run invocations use of -x flag

This applies the transformation implied by bfabb8a382
which is an update required by 3f574c7adb.

Signed-off-by: Ian Campbell <ijc@docker.com>

README.md

@@ -106,7 +106,7 @@ To run the test suite:
 
 ```
 cd test
-rtf -x run
+rtf -v run -x
 ```
 
 This will run the tests and put the results in a the `_results` directory!
@@ -115,13 +115,13 @@ Run control is handled using labels and with pattern matching.
 To run add a label you may use:
 
 ```
-rtf -x -l slow run
+rtf -v -l slow run -x
 ```
 
 To run tests that match the pattern `linuxkit.examples` you would use the following command:
 
 ```
-rtf -x run linuxkit.examples
+rtf -v run -x linuxkit.examples
 ```
 
 ## Building your own customised image

docs/testing.md

@@ -12,7 +12,7 @@ To run the test suite:
 
 ```
 cd test
-rtf -x run
+rtf -v run -x
 ```
 
 This will run the tests and put the results in a the `_results` directory!
@@ -21,7 +21,7 @@ Run control is handled using labels and with pattern matching.
 To run add a label you may use:
 
 ```
-rtf -x -l slow run
+rtf -v -l slow run -x
 ```
 
 You can list the tests which will be run using:
@@ -35,7 +35,7 @@ Some tests may be marked as `SKIP` and `LABELS` column will typically provide an
 To run tests that match the pattern `linuxkit.build` you would use the following command:
 
 ```
-rtf -x run linuxkit.build
+rtf -v run -x linuxkit.build
 ```
 
 ### Writing new tests

test/Makefile

@@ -43,7 +43,7 @@ ltp: $(LINUXKIT) test-ltp.img.tar.gz
 ### ------
 
 test: gcp-hack
-	@rtf -l build -x run
+	@rtf -l build -v run -x
 
 test-pr: gcp-hack
-	@rtf -l build -x run
+	@rtf -l build -v run -x