Further checks and format

script/check/host/all/core_pam_lib_google-authenticator_is_installed.check.sh

@@ -0,0 +1,8 @@
+#!/bin/bash
+
+_PKG_NAME='libpam-google-authenticator'
+
+dpkg -l | grep -q -F "${_PKG_NAME}" 2> /dev/null \
+    && exit 0
+
+exit 1

script/check/host/all/core_pam_lib_pwquality_is_installed.check.sh

@@ -0,0 +1,8 @@
+#!/bin/bash
+
+_PKG_NAME='libpam-pwquality'
+
+dpkg -l | grep -q -F "${_PKG_NAME}" 2> /dev/null \
+    && exit 0
+
+exit 1