Limit scripts in path for tests

shellspec adds spec/support/bin to the path, so we can put scripts that
should always be available here.

Also don't source sxmo_common.sh in the helper, if scripts don't do it
themselves we shouldn't do it for them in the tests.

Signed-off-by: Anjandev Momi <anjan@momi.ca>

spec/scripts/core/sxmo_common_spec.sh

@@ -1,6 +1,3 @@
-# shellcheck disable=SC2155
-export PATH="$PATH:$(pwd)/scripts/core"
-
 # This file is to investigate whether sxmo_common.sh is loaded in tests
 
 Describe 'sxmo_common.sh'

spec/scripts/core/sxmo_mutex_spec.sh

@@ -1,4 +1,3 @@
-# shellcheck disable=SC2155
 # SPDX-License-Identifier: AGPL-3.0-only
 # Copyright 2022 Sxmo Contributors
 export PATH="$PATH:$(pwd)/scripts/core:$(pwd)/configs/default_hooks"

spec/spec_helper.sh

@@ -7,10 +7,6 @@
 # so it is better to set them here.
 # set -eu
 
-# Include common aliases such as find='busybox find' to avoid breaking
-# expected coreutils environment.
-. scripts/core/sxmo_common.sh
-
 # This callback function will be invoked only once before loading specfiles.
 spec_helper_precheck() {
   # Available functions: info, warn, error, abort, setenv, unsetenv

spec/support/bin/sxmo_common.sh

@@ -0,0 +1 @@
+../../../scripts/core/sxmo_common.sh

spec/support/bin/sxmo_hook_icons.sh

@@ -0,0 +1 @@
+../../../configs/default_hooks/sxmo_hook_icons.sh