utils/checkpackagelib: fix shellcheck tests after update to shellcheck 0.9.0

shellcheck tests needs to be updated after shellcheck 0.9.0 update due
to changes in errors/warning reporting:

  utils/checkpackagelib/test_tool.py::test_Shellcheck[missing shebang-empty.sh--expected0] FAILED [ 98%]
  utils/checkpackagelib/test_tool.py::test_Shellcheck[2 warnings-unused.sh-unused=""-expected3] FAILED [ 99%]
  utils/checkpackagelib/test_tool.py::test_Shellcheck[tab-tab.sh-\t#!/bin/sh-expected4] FAILED [100%]

Signed-off-by: Romain Naour <romain.naour@smile.fr>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

utils/checkpackagelib/test_tool.py

@@ -100,7 +100,7 @@ Shellcheck = [
      '',
      ["dir/empty.sh:0: run 'shellcheck' and fix the warnings",
       "In dir/empty.sh line 1:\n"
-      "^-- SC2148: Tips depend on target shell and yours is unknown. Add a shebang or a 'shell' directive.\n"
+      "^-- SC2148 (error): Tips depend on target shell and yours is unknown. Add a shebang or a 'shell' directive.\n"
       "For more information:\n"
       "  https://www.shellcheck.net/wiki/SC2148 -- Tips depend on target shell and y..."]),
     ('sh shebang',
@@ -117,8 +117,8 @@ Shellcheck = [
      ["dir/unused.sh:0: run 'shellcheck' and fix the warnings",
       "In dir/unused.sh line 1:\n"
       'unused=""\n'
-      "^-- SC2148: Tips depend on target shell and yours is unknown. Add a shebang or a 'shell' directive.\n"
-      "^----^ SC2034: unused appears unused. Verify use (or export if used externally).\n"
+      "^-- SC2148 (error): Tips depend on target shell and yours is unknown. Add a shebang or a 'shell' directive.\n"
+      "^----^ SC2034 (warning): unused appears unused. Verify use (or export if used externally).\n"
       "For more information:\n"
       "  https://www.shellcheck.net/wiki/SC2148 -- Tips depend on target shell and y...\n"
       "  https://www.shellcheck.net/wiki/SC2034 -- unused appears unused. Verify use..."]),
@@ -128,7 +128,7 @@ Shellcheck = [
      ["dir/tab.sh:0: run 'shellcheck' and fix the warnings",
       "In dir/tab.sh line 1:\n"
       '\t#!/bin/sh\n'
-      "^-- SC1114: Remove leading spaces before the shebang.\n"
+      "^-- SC1114 (error): Remove leading spaces before the shebang.\n"
       "For more information:\n"
       "  https://www.shellcheck.net/wiki/SC1114 -- Remove leading spaces before the ..."]),
     ]