Do not change comments by remediations

Some Bash remediations that modify `/etc/login.defs` are
accidentally changing also the explanatory comments that
are in this files shipped by default. There is no reason
to change these comments because they don't have any effect
and changing them only increases noise in diffs.

The issue will be fixed by using the Jinja macro
`bash_replace_or_append` instead of custom remediations.

Resolves: https://issues.redhat.com/browse/RHEL-1484

linux_os/guide/system/accounts/accounts-pam/set_password_hashing_algorithm/set_password_hashing_algorithm_logindefs/bash/shared.sh

@@ -1,10 +1,4 @@
 # platform = multi_platform_rhel,multi_platform_fedora,multi_platform_ol,multi_platform_rhv,multi_platform_sle,multi_platform_ubuntu
 
 {{{ bash_instantiate_variables("var_password_hashing_algorithm") }}}
-
-if grep --silent ^ENCRYPT_METHOD /etc/login.defs ; then
-	sed -i "s/^ENCRYPT_METHOD .*/ENCRYPT_METHOD $var_password_hashing_algorithm/g" /etc/login.defs
-else
-	echo "" >> /etc/login.defs
-	echo "ENCRYPT_METHOD $var_password_hashing_algorithm" >> /etc/login.defs
-fi
+{{{ bash_replace_or_append('/etc/login.defs', '^ENCRYPT_METHOD', "$var_password_hashing_algorithm", '%s %s') }}}

linux_os/guide/system/accounts/accounts-restrictions/password_expiration/accounts_maximum_age_login_defs/bash/shared.sh

@@ -1,9 +1,4 @@
 # platform = multi_platform_all
 
 {{{ bash_instantiate_variables("var_accounts_maximum_age_login_defs") }}}
-
-grep -q ^PASS_MAX_DAYS /etc/login.defs && \
-  sed -i "s/PASS_MAX_DAYS.*/PASS_MAX_DAYS     $var_accounts_maximum_age_login_defs/g" /etc/login.defs
-if ! [ $? -eq 0 ]; then
-    echo "PASS_MAX_DAYS      $var_accounts_maximum_age_login_defs" >> /etc/login.defs
-fi
+{{{ bash_replace_or_append('/etc/login.defs', '^PASS_MAX_DAYS', "$var_accounts_maximum_age_login_defs", '%s %s') }}}

linux_os/guide/system/accounts/accounts-restrictions/password_expiration/accounts_minimum_age_login_defs/bash/shared.sh

@@ -1,9 +1,4 @@
 # platform = multi_platform_all
 
 {{{ bash_instantiate_variables("var_accounts_minimum_age_login_defs") }}}
-
-grep -q ^PASS_MIN_DAYS /etc/login.defs && \
-  sed -i "s/PASS_MIN_DAYS.*/PASS_MIN_DAYS     $var_accounts_minimum_age_login_defs/g" /etc/login.defs
-if ! [ $? -eq 0 ]; then
-    echo "PASS_MIN_DAYS      $var_accounts_minimum_age_login_defs" >> /etc/login.defs
-fi
+{{{ bash_replace_or_append('/etc/login.defs', '^PASS_MIN_DAYS', "$var_accounts_minimum_age_login_defs", '%s %s') }}}

linux_os/guide/system/accounts/accounts-restrictions/password_expiration/accounts_password_minlen_login_defs/bash/shared.sh

@@ -1,10 +1,4 @@
 # platform = Red Hat Virtualization 4,multi_platform_fedora,multi_platform_ol,multi_platform_rhel,multi_platform_sle
 
 {{{ bash_instantiate_variables("var_accounts_password_minlen_login_defs") }}}
-
-grep -q ^PASS_MIN_LEN /etc/login.defs && \
-sed -i "s/PASS_MIN_LEN.*/PASS_MIN_LEN\t$var_accounts_password_minlen_login_defs/g" /etc/login.defs
-if ! [ $? -eq 0 ]
-then
-  echo -e "PASS_MIN_LEN\t$var_accounts_password_minlen_login_defs" >> /etc/login.defs
-fi
+{{{ bash_replace_or_append('/etc/login.defs', '^PASS_MIN_LEN', "$var_accounts_password_minlen_login_defs", '%s %s') }}}

linux_os/guide/system/accounts/accounts-restrictions/password_expiration/accounts_password_warn_age_login_defs/bash/shared.sh

@@ -1,10 +1,4 @@
 # platform = multi_platform_all
 
 {{{ bash_instantiate_variables("var_accounts_password_warn_age_login_defs") }}}
-
-grep -q ^PASS_WARN_AGE /etc/login.defs && \
-sed -i "s/PASS_WARN_AGE.*/PASS_WARN_AGE\t$var_accounts_password_warn_age_login_defs/g" /etc/login.defs
-if ! [ $? -eq 0 ]
-then
-  echo -e "PASS_WARN_AGE\t$var_accounts_password_warn_age_login_defs" >> /etc/login.defs
-fi
+{{{ bash_replace_or_append('/etc/login.defs', '^PASS_WARN_AGE', "$var_accounts_password_warn_age_login_defs", '%s %s') }}}