meta-hpe: fix shellcheck issues

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: I30885f8c2577c3c2aa333a61210e6738fbf016c7
diff --git a/meta-hpe/meta-common/recipes-phosphor/initrdscripts/obmc-phosphor-initfs.bbappend b/meta-hpe/meta-common/recipes-phosphor/initrdscripts/obmc-phosphor-initfs.bbappend
index ab76653..b4092a1 100644
--- a/meta-hpe/meta-common/recipes-phosphor/initrdscripts/obmc-phosphor-initfs.bbappend
+++ b/meta-hpe/meta-common/recipes-phosphor/initrdscripts/obmc-phosphor-initfs.bbappend
@@ -9,3 +9,5 @@
 
 FILES:${PN} += " /init /shutdown /update /whitelist /dev "
 FILES:${PN} += " /init-options /init-download-url "
+
+RDEPENDS:${PN}:append = " bash"