Initial patch for RBC BIOS Config Manager

ResetBIOSSettings is not implemented as part of this patch apart from
that GetAttribute, SetAttribute and setters for BaseBIOSTable,
PendingAttributes is im

Initial patch for RBC BIOS Config Manager

ResetBIOSSettings is not implemented as part of this patch apart from
that GetAttribute, SetAttribute and setters for BaseBIOSTable,
PendingAttributes is implemeted.

Interface:
xyz.openbmc_project.BIOSConfig.Manager
Properties:
.BaseBIOSTable property a{s(sbsssvva(sv))} 1 "testAttributeName" "xyz.openbmc_pr... emits-change writable
.PendingAttributes property a{s(sv)} 2 "test1" "xyz.openbmc_project.BIOSCo... emits-change writable
.ResetBIOSSettings property s "xyz.openbmc_project.BIOSConfig.Manag... emits-change writable
Methods:
.GetAttribute method s svv -
.SetAttribute method sv - -

Tested:
1. Service is working well.
2. All the dbus methods and properties are shown correctly.
3. Unit test done.
a). Tree
root@intel-obmc:~# busctl tree xyz.openbmc_project.BIOSConfigManager
`-/xyz
`-/xyz/openbmc_project
`-/xyz/openbmc_project/bios_config
`-/xyz/openbmc_project/bios_config/manager
b). Instrospect
root@intel-obmc:~# busctl introspect xyz.openbmc_project.BIOSConfigManager /xyz/openbmc_project/bios_config/manager
NAME TYPE SIGNATURE RESULT/VALUE FLAGS
org.freedesktop.DBus.Introspectable interface - - -
.Introspect method - s -
org.freedesktop.DBus.Peer interface - - -
.GetMachineId method - s -
.Ping method - - -
org.freedesktop.DBus.Properties interface - - -
.Get method ss v -
.GetAll method s a{sv} -
.Set method ssv - -
.PropertiesChanged signal sa{sv}as - -
xyz.openbmc_project.BIOSConfig.Manager interface - - -
.GetAttribute method s svv -
.SetAttribute method sv - -
.BaseBIOSTable property a{s(sbsssvva(sv))} 2 "attr0" "xyz.openbmc_project.BIOSCo... emits-change writable
.PendingAttributes property a{s(sv)} 1 "test1" "xyz.openbmc_project.BIOSCo... emits-change writable
.ResetBIOSSettings property s "xyz.openbmc_project.BIOSConfig.Manag... emits-change writable
c). Method: GetAttribute/SetAttribute
root@intel-obmc:~# busctl call xyz.openbmc_project.BIOSConfigManager /xyz/openbmc_project/bios_config/manager xyz.openbmc_project.BIOSConfig.Manager SetAttribute sv test1 s "value"
root@intel-obmc:~# busctl call xyz.openbmc_project.BIOSConfigManager /xyz/openbmc_project/bios_config/manager xyz.openbmc_project.BIOSConfig.Manager GetAttribute s test1
svv "xyz.openbmc_project.BIOSConfig.Manager.AttributeType.String" x 0 s "value"
d). Service
root@intel-obmc:~# systemctl status xyz.openbmc_project.biosconfig_manager
* xyz.openbmc_project.biosconfig_manager.service - BIOS Config Manager - For Remote BIOS configuration update
Loaded: loaded (8;;file://intel-obmc/lib/systemd/system/xyz.openbmc_project.biosconfig_manager.service/lib/systemd/system/xyz.openbmc_project.biosconfig_manager.service8;;; enabled; vendor preset: enabled)
Drop-In: /etc/systemd/system/xyz.openbmc_project.biosconfig_manager.service.d
`-8;;file://intel-obmc/etc/systemd/system/xyz.openbmc_project.biosconfig_manager.service.d/watchdog.confwatchdog.conf8;;
Active: active (running) since Thu 1970-01-01 00:00:56 UTC; 25min ago
Main PID: 394 (biosconfig-mana)
CGroup: /system.slice/xyz.openbmc_project.biosconfig_manager.service
`-394 /usr/bin/biosconfig-manager

Jan 01 00:00:56 intel-obmc systemd[1]: Started BIOS Config Manager - For Remote BIOS configuration update.

Change-Id: I7a7312ffbdf000aab254c77ed5e4f9a8d4ec4d45
Signed-off-by: Kuiying Wang <kuiying.wang@intel.com>

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