Make TestEventListenerBase register all verbosities

This is a temporarily workaround until we can nuke the current
verbosities system from the orbit and replace it with something
actually sane.

Fixes #1426

include/reporters/catch_reporter_bases.cpp

@@ -30,7 +30,7 @@ namespace Catch {
         // + 1 for null terminator
         const std::size_t maxDoubleSize = DBL_MAX_10_EXP + 1 + 1 + 3 + 1;
         char buffer[maxDoubleSize];
- 
+
         // Save previous errno, to prevent sprintf from overwriting it
         ErrnoGuard guard;
 #ifdef _MSC_VER
@@ -45,6 +45,10 @@ namespace Catch {
     TestEventListenerBase::TestEventListenerBase(ReporterConfig const & _config)
         :StreamingReporterBase(_config) {}
 
+    std::set<Verbosity> TestEventListenerBase::getSupportedVerbosities() {
+        return { Verbosity::Quiet, Verbosity::Normal, Verbosity::High };
+    }
+
     void TestEventListenerBase::assertionStarting(AssertionInfo const &) {}
 
     bool TestEventListenerBase::assertionEnded(AssertionStats const &) {