Activation: Reset service file booleans after activation

During the activation process, two booleans are used to keep track of
the state of service files that are called as a part of the process.

These booleans are left "true" at the end of the process and the
activated image is still subscribed to systemd signals (to be addressed
in openbmc/openbmc#1843), so the second half of activation runs again
upon the state change of any service file. At that time, we attempt to
set the value of an ActivationProgress parameter that doesn't exist,
crashing the application.

This commit simply resets the booleans to false at the end of
activation, resolving this crash.

Resolves openbmc/openbmc#1984

Change-Id: I6f77778c2d44c10757dd4aca5e846b9e09596957
Signed-off-by: Michael Tritz <mtritz@us.ibm.com>
diff --git a/activation.cpp b/activation.cpp
index 428a256..fd238d0 100755
--- a/activation.cpp
+++ b/activation.cpp
@@ -149,6 +149,11 @@
                 activationBlocksTransition.reset(nullptr);
                 activationProgress.reset(nullptr);
 
+                squashfsLoaded = false;
+                rwVolumesCreated = false;
+
+                //TODO: openbmc/openbmc#1843: Unsubscribe from systemd signals.
+
                 return softwareServer::Activation::activation(
                         softwareServer::Activation::Activations::Active);
             }