add influx ssl option

Add possibility to connect to InfluxDB via https.
Also adding the option for verifying the https cert.

doc/mgr/influx.rst

@@ -53,6 +53,8 @@ Additional optional configuration settings are:
 :interval: Time between reports to InfluxDB.  Default 5 seconds.
 :database: InfluxDB database name.  Default "ceph".  You will need to create this database and grant write privileges to the configured username or the username must have admin privileges to create it.  
 :port: InfluxDB server port.  Default 8086
+:ssl: Use https connection for InfluxDB server.  Default false
+:verify_ssl: Verify https cert for InfluxDB server.  Default false
 
 
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src/pybind/mgr/influx/module.py

@@ -111,7 +111,22 @@ def send_to_influx(self):
         username = self.get_config("username", default="")
         password = self.get_config("password", default="")
 
-        client = InfluxDBClient(host, port, username, password, database)
+        # Use https connection to influx
+        ssl = self.get_config("ssl", default="false")
+        if ssl.lower() == "true":
+            ssl = True
+        else:
+            ssl = False
+
+        # Verify https cert
+        verify_ssl = self.get_config("verify_ssl", default="false")
+        if verify_ssl.lower() == "true":
+            verify_ssl = True
+        else:
+            verify_ssl = False
+
+
+        client = InfluxDBClient(host, port, username, password, database, ssl, verify_ssl)
 
         # using influx client get_list_database requires admin privs, instead we'll catch the not found exception and inform the user if db can't be created
         try: