Add installation support for Oracle Linux 7

This removes Oracle Linux 6 support ("OracleLinux") which, like RHEL6,
is now unsupported.  "OracleServer" matches Oracle Linux 7.

Change-Id: I35b1c7d0b103c509283dba0f6551453e7d8ac4cc
Closes-Bug: #1568634
diff --git a/functions-common b/functions-common
index b0352d3..0806681 100644
--- a/functions-common
+++ b/functions-common
@@ -380,7 +380,7 @@
         DISTRO="sle${os_RELEASE%.*}"
     elif [[ "$os_VENDOR" =~ (Red.*Hat) || \
         "$os_VENDOR" =~ (CentOS) || \
-        "$os_VENDOR" =~ (OracleLinux) || \
+        "$os_VENDOR" =~ (OracleServer) || \
         "$os_VENDOR" =~ (Virtuozzo) ]]; then
         # Drop the . release as we assume it's compatible
         # XXX re-evaluate when we get RHEL10
@@ -427,7 +427,7 @@
         GetOSVersion
     fi
 
-    [ "$os_VENDOR" = "OracleLinux" ]
+    [ "$os_VENDOR" = "OracleServer" ]
 }
 
 
@@ -441,7 +441,7 @@
 
     [ "$os_VENDOR" = "Fedora" ] || [ "$os_VENDOR" = "Red Hat" ] || \
         [ "$os_VENDOR" = "RedHatEnterpriseServer" ] || \
-        [ "$os_VENDOR" = "CentOS" ] || [ "$os_VENDOR" = "OracleLinux" ] || \
+        [ "$os_VENDOR" = "CentOS" ] || [ "$os_VENDOR" = "OracleServer" ] || \
         [ "$os_VENDOR" = "Virtuozzo" ] || [ "$os_VENDOR" = "kvmibm" ]
 }