[ima-evm-utils PATCH v3 11/14] tests: Address issues raised by shellcheck SC2196

[Stefan Berger <stefanb@linux.ibm.com>]

Address issues raised by shellcheck SC2196:
  "egrep is non-standard and deprecated. Use grep -E instead."

Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
---
 tests/Makefile.am  | 2 +-
 tests/functions.sh | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/tests/Makefile.am b/tests/Makefile.am
index cbf637c..3c542d7 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -28,7 +28,7 @@ distclean: distclean-keys
 shellcheck:
 	shellcheck \
 		-i SC2086,SC2181,SC2046,SC2320,SC2317,SC2034,SC2164,SC2166 \
-		-i SC2294,SC2206 \
+		-i SC2294,SC2206,SC2196 \
 		functions.sh gen-keys.sh install-fsverity.sh \
 		install-mount-idmapped.sh install-openssl3.sh \
 		install-swtpm.sh install-tss.sh softhsm_setup \
diff --git a/tests/functions.sh b/tests/functions.sh
index 4ad61ef..c39b894 100755
--- a/tests/functions.sh
+++ b/tests/functions.sh
@@ -272,7 +272,7 @@ _test_xattr() {
   local file=$1 attr=$2 prefix=$3
   local text_for=${ADD_TEXT_FOR:+ for $ADD_TEXT_FOR}
 
-  if ! getfattr -n "$attr" -e hex "$file" | egrep -qx "$attr=$prefix"; then
+  if ! getfattr -n "$attr" -e hex "$file" | grep -qx -E "$attr=$prefix"; then
     color_red_on_failure
     echo "Did not find expected hash$text_for:"
     echo "    $attr=$prefix"
-- 
2.43.0