Add script for POD whitespace check in Makefile

As a convention the POD and the code needs to have an empty line in between.
The script checks all the files rather the commit files in the lib directory.
With this PR we enable validation of the rule in CI

Signed-off-by: Ioannis Bonatakis <ybonatakis@suse.com>

Makefile

@@ -56,6 +56,10 @@ test-compile: check-links
 test-compile-changed: os-autoinst/
 	export PERL5LIB=${PERL5LIB_} ; for f in `git diff --name-only | grep '.pm'` ; do perl -c $$f 2>&1 | grep -v " OK$$" && exit 2; done ; true
 
+.PHONY: test_pod_whitespace_rule
+test_pod_whitespace_rule:
+	tools/check_pod_whitespace_rule
+
 .PHONY: test-yaml-valid
 test-yaml-valid:
 	$(eval YAMLS=$(shell sh -c "git ls-files schedule/ test_data/ | grep '\\.ya\?ml$$'"))
@@ -107,7 +111,7 @@ test-spec:
 	tools/update_spec --check
 
 .PHONY: test-static
-test-static: tidy-check test-yaml-valid test-modules-in-yaml-schedule test-merge test-dry test-no-wait_idle test-deleted-renamed-referenced-files test-unused-modules-changed test-soft_failure-no-reference test-spec test-invalid-syntax test-code-style test-metadata
+test-static: tidy-check test-yaml-valid test-modules-in-yaml-schedule test-merge test-dry test-no-wait_idle test-deleted-renamed-referenced-files test-unused-modules-changed test-soft_failure-no-reference test-spec test-invalid-syntax test-code-style test-metadata test_pod_whitespace_rule
 
 .PHONY: test
 ifeq ($(TESTS),compile)

tools/check_pod_whitespace_rule

@@ -0,0 +1,10 @@
+#!/bin/bash -ex
+<< 'heredoc_pod_whitespace_rule'
+As a convention the POD and the code needs to have an empty line in between.
+The script checks all the files rather the commit files in the lib directory.
+heredoc_pod_whitespace_rule
+
+
+grep -Pzo "=cut\nsub" -rn lib || exit 0
+echo -e '\033[0;31mCheck for whitespace after end of POD failed.\nAdd a empty line between =cut and code.'
+exit 1