ibm-specific: install hypervisor certificate manager service

this commit is to enable hypervisor certficate manager feature
and install service for rainier and tacoma

Signed-off-by: Ravi Teja <raviteja28031990@gmail.com>
Change-Id: I10c0e05b8a40e9f32e2f6dc5ac30e99932f1d244
diff --git a/recipes-phosphor/certificate/phosphor-certificate-manager_%.bbappend b/recipes-phosphor/certificate/phosphor-certificate-manager_%.bbappend
new file mode 100644
index 0000000..48fc87a
--- /dev/null
+++ b/recipes-phosphor/certificate/phosphor-certificate-manager_%.bbappend
@@ -0,0 +1,2 @@
+PACKAGECONFIG_append_rainier = " ibm-hypervisor-cert"
+PACKAGECONFIG_append_witherspoon-tacoma = " ibm-hypervisor-cert"