chore(scripts): make shellcheck happy

pkg-vsn.sh

@@ -18,7 +18,7 @@ RELEASE="$(grep -E "define.+EMQX_RELEASE.+${EDITION}" include/emqx_release.hrl |
 git_exact_vsn() {
     local tag
     tag="$(git describe --tags --match "[e|v]*" --exact 2>/dev/null)"
-    echo "$tag" | sed 's/^[v|e]//g'
+    echo "${tag#[e|v]}"
 }
 
 GIT_EXACT_VSN="$(git_exact_vsn)"

scripts/find-props.sh

@@ -13,4 +13,5 @@ if [ "$1" != "emqx" ]; then
     BASEDIR="$1"
 fi
 
+# shellcheck disable=SC2038
 find "${BASEDIR}/test/props" -name "prop_*.erl" 2>/dev/null | xargs -I{} basename {} .erl | xargs | tr ' ' ','

scripts/find-suites.sh

@@ -12,4 +12,5 @@ TESTDIR="test"
 if [ "$1" != "emqx" ]; then
     TESTDIR="$1/test"
 fi
+# shellcheck disable=SC2038
 find "${TESTDIR}" -name "*_SUITE.erl" 2>/dev/null | xargs | tr ' ' ','