Add test for #76 which should be fixed

tests/test_psycopg2.py

@@ -0,0 +1,12 @@
+import autodynatrace
+
+import psycopg2
+from psycopg2.extras import RealDictCursor
+
+
+def test_instrumentation():
+    conn = psycopg2.connect("dbname=invictus user=invictus password=password")
+    cur = conn.cursor(cursor_factory=RealDictCursor)
+    cur.execute("SELECT tablename, tableowner FROM pg_catalog.pg_tables")
+    for row in cur:
+        print(row['tablename'])