[Calico] Using booleans where expected in values (not strings)

The string "false" isn't boolean false.

Where possible use booleans in the values so constructs like:

   {{ if not .Values.some.thing }}
   # some thing is not set
   {{ end }}

work as expected.

In the places it's expanded and passed into the pod environment
variables it is converted to a string; we update those all the same so
that template logic will work.

Change-Id: I6142b9d514b2b21381dbf0de2f1351f5ab94e696

calico/values.yaml

@@ -195,9 +195,9 @@ networking:
     # that ipPool
     ippool:
       ipip:
-        enabled: "true"
-      nat_outgoing: "true"
-      disabled: "false"
+        enabled: true
+      nat_outgoing: true
+      disabled: false
 
   bgp:
     # our asnumber for bgp peering
@@ -471,7 +471,7 @@ conf:
     # Since we're running in the host namespace and might not have KubeDNS
     # access, configure the container's /etc/hosts to resolve
     # kubernetes.default to the correct service clusterIP.
-    CONFIGURE_ETC_HOSTS: "true"
+    CONFIGURE_ETC_HOSTS: true
 
   node:
     # for specific details see
@@ -492,7 +492,7 @@ conf:
     # Location of the client certificate for etcd.
     ETCD_CERT_FILE: ""
     # Disable file logging so `kubectl logs` works.
-    CALICO_DISABLE_FILE_LOGGING: "true"
+    CALICO_DISABLE_FILE_LOGGING: true
     # Set Felix endpoint to host default action to ACCEPT.
     # early/startup log level for calico-node on startup.
     CALICO_STARTUP_LOGLEVEL: "Info"
@@ -508,16 +508,16 @@ conf:
     # different hosts to communicate with each otehr).
     CALICO_IPV4POOL_IPIP: "Always"
     # Disable IPv6 on Kubernetes.
-    FELIX_IPV6SUPPORT: "false"
+    FELIX_IPV6SUPPORT: false
     # Set MTU for tunnel device used if ipip is enabled, it's
     # recommended you leave this as null and an appropriate value will
     # be set based on tunneling mode and the networking.mtu value
     FELIX_IPINIPMTU: null
     # Set Felix logging; also (ab)used for bgp configuration
     FELIX_LOGSEVERITYSCREEN: "Info"
-    FELIX_HEALTHENABLED: "true"
+    FELIX_HEALTHENABLED: true
     # Set Felix experimental Prometheus metrics server
-    FELIX_PROMETHEUSMETRICSENABLED: "true"
+    FELIX_PROMETHEUSMETRICSENABLED: true
     FELIX_PROMETHEUSMETRICSPORT: "9091"
     # Auto-detect the BGP IP address.
     IP: ""