Add phosphor-logging

This commit adds phosphor-logging (lg2) to eStorageD. It also adds
several logging statements.

Signed-off-by: John Edward Broadbent <jebr@google.com>
Change-Id: Ideb4f6033b94dd8b1384c79cd3a26ce89e7b2c4c
diff --git a/phosphor-logging.wrap b/phosphor-logging.wrap
new file mode 100644
index 0000000..a039fcf
--- /dev/null
+++ b/phosphor-logging.wrap
@@ -0,0 +1,3 @@
+[wrap-git]
+url = https://github.com/openbmc/phosphor-logging.git
+revision = HEAD