Adjusted cf-execd schedule examples to not show ranged minute classes

Using ranged classes for scheduling can result in multiple executions during
that period of time as cf-execd should wake up once during each minute to
determine if exec_command should be scheduled.

Ticket: ENT-11752
Changelog: None
(cherry picked from commit 15787d5)

examples/example-snippets/set_up_hpc_clusters.cf

@@ -8,7 +8,7 @@ body executor control
       mailmaxlines => "30";
       # Once per hour, on the hour
 
-      schedule     => { "Min00_05" };
+      schedule     => { "Min00" };
 }
 #######################################################
 

reference/components/cf-execd.markdown

@@ -38,14 +38,14 @@ These body settings determine the behavior of `cf-execd`,including scheduling
 times and output capture to `WORKDIR/outputs` and relay via email.
 
 ```cf3
-     body executor control
-     {
-         splaytime  => "5";
-         mailto     => "[email protected]";
-         mailfrom   => "cfengine@$(host).example.org";
-         smtpserver => "localhost";
-         schedule   => { "Min00_05", "Min30_35" }
-     }
+body executor control
+{
+    splaytime  => "5";
+    mailto     => "[email protected]";
+    mailfrom   => "cfengine@$(host).example.org";
+    smtpserver => "localhost";
+    schedule   => { "Min00", "Min30" }
+}
 ```
 
 
@@ -307,10 +307,10 @@ function may be affected by changing the `schedule`.
 **Example:**
 
 ```cf3
-    body executor control
-    {
-    schedule => { "Min00", "(Evening|Night).Min15_20", "Min30", "(Evening|Night).Min45_50" };
-    }
+body executor control
+{
+schedule => { "Min00", "(Evening|Night).Min15", "Min30", "(Evening|Night).Min45" };
+}
 ```
 
 ### smtpserver

reference/components/cf-hub.markdown

@@ -82,9 +82,9 @@ body hub control
 {
 
   # Collect reports every at the top and half of the hour. Additionally collect
-  # reports during the evening or night between Minute 45 and 50.
+  # reports during the evening or night at Minute 45.
 
-  hub_schedule => { "Min00", "Min30", "(Evening|Night).Min45_50" };
+  hub_schedule => { "Min00", "Min30", "(Evening|Night).Min45" };
 
 }
 ```