Tuneups OpenSIPS-SM, adding data/tutorials/osips_async, config updated with defaults

data/tutorials/osips_async/opensips/etc/default/opensips

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+#
+# OpenSIPS startup options
+#
+
+# Set to yes to enable opensips, once configured properly.
+RUN_OPENSIPS=yes
+
+# User to run as
+USER=opensips
+
+# Group to run as
+GROUP=opensips
+
+# Amount of shared memory to allocate for the running OpenSIPS server (in Mb)
+S_MEMORY=64
+
+# Amount of pkg memory to allocate for the running OpenSIPS server (in Mb)
+P_MEMORY=4
+
+# Enable the server to leave a core file when it crashes.
+# Set this to 'yes' to enable OpenSIPS to leave a core file when it crashes
+# or 'no' to disable this feature. This option is case sensitive and only
+# accepts 'yes' and 'no' and only in lowercase letters.
+# On some systems (e.g. Ubuntu 6.10, Debian 4.0) it is necessary to specify
+# a directory for the core files to get a dump. Look into the opensips
+# init file for an example configuration.
+DUMP_CORE=no