Added test cases for clock management

What all is added:
    - Added test case to set BMC and HOST Time
        for all good path scenarios
    - Added test case to set BMC and HOST Time
        for all bad path scenarios
    - These TCs are also added in skip list due
        to an existing issue
    - Added keyword to get BMC and HOST time. This
        keyword is used to verify set time operation.
    - Updated minimum cell separator of 2 spaces
    - Updated documentation section
    - All lines are now under 79 characters

Resolves openbmc/openbmc-test-automation#227 and
         openbmc/openbmc-test-automation#271

Change-Id: I15a4915caf1a212272c390f12b949e76748c1664
Signed-off-by: Rahul Maheshwari <rahulmaheshwari@in.ibm.com>
diff --git a/test_lists/skip_test_palmetto b/test_lists/skip_test_palmetto
index 501b4e4..3f8cbeb 100644
--- a/test_lists/skip_test_palmetto
+++ b/test_lists/skip_test_palmetto
@@ -55,3 +55,7 @@
 -e get_directory_listing
 #https://github.com/openbmc/openbmc-test-automation/issues/90
 -e Verify_System_VPD_Properties
+#https://github.com/openbmc/openbmc/issues/928
+-e Set_Host_Time_With_Both_And_NTP
+#https://github.com/openbmc/openbmc/issues/901
+-e Set_BMC_Time_With_Split_And_Manual