Add vfs.s3.no_sign_request config (#20)

Author: johnkerl

notebooks/tutorial_lightning.ipynb

@@ -48,7 +48,7 @@
     "\n",
     "experiment = soma.open(\n",
     "    CZI_Census_Homo_Sapiens_URL,\n",
-    "    context=soma.SOMATileDBContext(tiledb_config={\"vfs.s3.region\": \"us-west-2\"}),\n",
+    "    context=soma.SOMATileDBContext(tiledb_config={\"vfs.s3.region\": \"us-west-2\", \"vfs.s3.no_sign_request\": \"true\"}),\n",
     ")\n",
     "obs_value_filter = \"tissue_general == 'tongue' and is_primary_data == True\"\n",
     "\n",

notebooks/tutorial_multiworker.ipynb

@@ -37,7 +37,7 @@
     "\n",
     "experiment = soma.open(\n",
     "    CZI_Census_Homo_Sapiens_URL,\n",
-    "    context=soma.SOMATileDBContext(tiledb_config={\"vfs.s3.region\": \"us-west-2\"}),\n",
+    "    context=soma.SOMATileDBContext(tiledb_config={\"vfs.s3.region\": \"us-west-2\", \"vfs.s3.no_sign_request\": \"true\"}),\n",
     ")\n",
     "obs_value_filter = \"tissue_general == 'tongue' and is_primary_data == True\"\n",
     "\n",

notebooks/tutorial_pytorch.ipynb

@@ -61,7 +61,7 @@
     "\n",
     "experiment = soma.open(\n",
     "    CZI_Census_Homo_Sapiens_URL,\n",
-    "    context=soma.SOMATileDBContext(tiledb_config={\"vfs.s3.region\": \"us-west-2\"}),\n",
+    "    context=soma.SOMATileDBContext(tiledb_config={\"vfs.s3.region\": \"us-west-2\", \"vfs.s3.no_sign_request\": \"true\"}),\n",
     ")\n",
     "obs_value_filter = \"tissue_general == 'tongue' and is_primary_data == True\"\n",
     "\n",