[ipaclient] Fix type of MakeHomeDir heat param

https://review.opendev.org/#/c/650899 added this new
Heat Parameter but set type to 'bool', the correct type
is 'boolean', this patch fixes it.

Also change the comparison in shell script to handle
both True/true by converting the variable to lower case.

Related-Bug: #1823727
Change-Id: I52ba523ecbfd8282858e3102b29189d8ce287a26

extraconfig/services/ipaclient.yaml

@@ -37,7 +37,7 @@ parameters:
     description: The python interpreter to use for python and ansible actions
     default: /usr/bin/python
   MakeHomeDir:
-    type: bool
+    type: boolean
     description: Configure PAM to create a users home directory if it does not exist.
     default: False
 
@@ -142,7 +142,7 @@ outputs:
                 if [ -n "$realm" ]; then
                     OPTS="$OPTS --realm=$realm"
                 fi
-                if [ "$makehomedir" = "True" ]; then
+                if [ "${makehomedir,,}" = "true" ]; then
                     OPTS="$OPTS --mkhomedir"
                 fi