Correct documentation and testcase data for some user-data YAML (#618)

For cc_users_groups the user setting "expiredate" must be quoted in
order for the relevant flag and value to be then passed to the useradd
command. It its vaiue is not quoted then it is treated as Python type
datetime.date and in `cloudinit/distros/__init__.py` the below "is it a
string" condition fails and so no "--expiredate" parameter is passed to
useradd and therefore it has no effect:

```
if key in useradd_opts and val and isinstance(val, str):
    useradd_cmd.extend([useradd_opts[key], val])
```

For cc_users_groups, the user setting "inactive" does not actually
disable accounts, the useradd "--inactive" option actually defines the
number of days after password expiry that users can still login. So I
have changed the docs to show it taking a quoted value of days (which
works with the current code) rather than a boolean value.  The quotes
are necessary, like expiredate above, so that the value is also passed
to the useradd command.

For cc_power_state_change.py the "delay" setting value needs to have
quotes around it as otherwise its leading plus sign will be stripped
off.

3 files changed, 7 insertions, 6 deletions

diff --git a/doc/examples/cloud-config-power-state.txt b/doc/examples/cloud-config-power-state.txt
index 9cd56814..002707ec 100644
--- a/doc/examples/cloud-config-power-state.txt
+++ b/doc/examples/cloud-config-power-state.txt
@@ -18,7 +18,7 @@
 # when 'timeout' seconds have elapsed.
 #
 # delay: form accepted by shutdown.  default is 'now'. other format
-#        accepted is +m (m in minutes)
+#        accepted is '+m' (m in minutes)
 # mode: required. must be one of 'poweroff', 'halt', 'reboot'
 # message: provided as the message argument to 'shutdown'. default is none.
 # timeout: the amount of time to give the cloud-init process to finish
diff --git a/doc/examples/cloud-config-user-groups.txt b/doc/examples/cloud-config-user-groups.txt
index b593cdd1..4a5a7e20 100644
--- a/doc/examples/cloud-config-user-groups.txt
+++ b/doc/examples/cloud-config-user-groups.txt
@@ -19,7 +19,7 @@ users:
     primary_group: foobar
     groups: users
     selinux_user: staff_u
-    expiredate: 2012-09-01
+    expiredate: '2012-09-01'
     ssh_import_id: foobar
     lock_passwd: false
     passwd: $6$j212wezy$7H/1LT4f9/N3wpgNunhsIqtMj62OKiS3nyNwuizouQc3u7MbYCarYeAHWYPYb2FT.lbioDm2RrkJPb9BZMN1O/
@@ -34,7 +34,7 @@ users:
       - <ssh pub key 2>
   - name: cloudy
     gecos: Magic Cloud App Daemon User
-    inactive: true
+    inactive: '5'
     system: true
   - name: fizzbuzz
     sudo: False
@@ -47,6 +47,7 @@ users:
 
 # Valid Values:
 #   name: The user's login name
+#   expiredate: Date on which the user's account will be disabled.
 #   gecos: The user name's real name, i.e. "Bob B. Smith"
 #   homedir: Optional. Set to the local path you want to use. Defaults to
 #           /home/<username>
@@ -57,7 +58,7 @@ users:
 #           "staff_u". When this is omitted the system will select the default
 #           SELinux user.
 #   lock_passwd: Defaults to true. Lock the password to disable password login
-#   inactive: Create the user as inactive
+#   inactive: Number of days after password expires until account is disabled
 #   passwd: The hash -- not the password itself -- of the password you want
 #           to use for this user. You can generate a safe hash via:
 #               mkpasswd --method=SHA-512 --rounds=4096
diff --git a/doc/examples/cloud-config.txt b/doc/examples/cloud-config.txt
index f3ae5e68..de9a0f87 100644
--- a/doc/examples/cloud-config.txt
+++ b/doc/examples/cloud-config.txt
@@ -518,10 +518,10 @@ manual_cache_clean: False
 # syslog being taken down while cloud-init is running.
 #
 # delay: form accepted by shutdown.  default is 'now'. other format
-#        accepted is +m (m in minutes)
+#        accepted is '+m' (m in minutes)
 # mode: required. must be one of 'poweroff', 'halt', 'reboot'
 # message: provided as the message argument to 'shutdown'. default is none.
 power_state:
-  delay: 30
+  delay: '+30'
   mode: poweroff
   message: Bye Bye