Use Sphinx 1.5 warning-is-error

With pbr 2.0 and Sphinx 1.5, the setting for treat sphinx warnings as
errors is setting warning-is-error in build_sphinx section. Migrate
the setting from the old warnerrors one.

Remove all-files, we do not have man pages.

Note that the build_sphinx section is not used by our toolchain, still
doesn't harm to use proper setup so that it could be used.

Change-Id: I03403b1ed20c4a4bccb1c03311d3999e12a98416

doc/admin-guide/setup.cfg

@@ -19,12 +19,9 @@ setup-hooks =
 [files]
 
 [build_sphinx]
-all_files = 1
+warning-is-error = 1
 build-dir = build
 source-dir = source
 
 [wheel]
 universal = 1
-
-[pbr]
-warnerrors = True

doc/arch-design-to-archive/setup.cfg

@@ -19,12 +19,9 @@ setup-hooks =
 [files]
 
 [build_sphinx]
-all_files = 1
+warning-is-error = 1
 build-dir = build
 source-dir = source
 
 [wheel]
 universal = 1
-
-[pbr]
-warnerrors = True

doc/arch-design/setup.cfg

@@ -19,12 +19,9 @@ setup-hooks =
 [files]
 
 [build_sphinx]
-all_files = 1
+warning-is-error = 1
 build-dir = build
 source-dir = source
 
 [wheel]
 universal = 1
-
-[pbr]
-warnerrors = True

doc/cli-reference/setup.cfg

@@ -19,12 +19,9 @@ setup-hooks =
 [files]
 
 [build_sphinx]
-all_files = 1
+warning-is-error = 1
 build-dir = build
 source-dir = source
 
 [wheel]
 universal = 1
-
-[pbr]
-warnerrors = True

doc/config-reference/setup.cfg

@@ -19,12 +19,9 @@ setup-hooks =
 [files]
 
 [build_sphinx]
-all_files = 1
+warning-is-error = 1
 build-dir = build
 source-dir = source
 
 [wheel]
 universal = 1
-
-[pbr]
-warnerrors = True

doc/contributor-guide/setup.cfg

@@ -19,12 +19,9 @@ setup-hooks =
 [files]
 
 [build_sphinx]
-all_files = 1
+warning-is-error = 1
 build-dir = build
 source-dir = source
 
 [wheel]
 universal = 1
-
-[pbr]
-warnerrors = True

doc/ha-guide/setup.cfg

@@ -19,12 +19,9 @@ setup-hooks =
 [files]
 
 [build_sphinx]
-all_files = 1
+warning-is-error = 1
 build-dir = build
 source-dir = source
 
 [wheel]
 universal = 1
-
-[pbr]
-warnerrors = True

doc/image-guide/setup.cfg

@@ -19,12 +19,9 @@ setup-hooks =
 [files]
 
 [build_sphinx]
-all_files = 1
-build-dir = build
+warning-is-error = 1
 source-dir = source
+build-dir = build
 
 [wheel]
 universal = 1
-
-[pbr]
-warnerrors = True

doc/install-guide-debconf/setup.cfg

@@ -19,12 +19,9 @@ setup-hooks =
 [files]
 
 [build_sphinx]
-all_files = 1
+warning-is-error = 1
 build-dir = build
 source-dir = source
 
 [wheel]
 universal = 1
-
-[pbr]
-warnerrors = True

doc/install-guide/setup.cfg

@@ -19,12 +19,9 @@ setup-hooks =
 [files]
 
 [build_sphinx]
-all_files = 1
+warning-is-error = 1
 build-dir = build
 source-dir = source
 
 [wheel]
 universal = 1
-
-[pbr]
-warnerrors = True

doc/networking-guide/setup.cfg

@@ -19,12 +19,9 @@ setup-hooks =
 [files]
 
 [build_sphinx]
-all_files = 1
+warning-is-error = 1
 build-dir = build
 source-dir = source
 
 [wheel]
 universal = 1
-
-[pbr]
-warnerrors = True

doc/ops-guide/setup.cfg

@@ -19,12 +19,9 @@ setup-hooks =
 [files]
 
 [build_sphinx]
-all_files = 1
+warning-is-error = 1
 build-dir = build
 source-dir = source
 
 [wheel]
 universal = 1
-
-[pbr]
-warnerrors = True

doc/user-guide/setup.cfg

@@ -19,12 +19,9 @@ setup-hooks =
 [files]
 
 [build_sphinx]
-all_files = 1
+warning-is-error = 1
 build-dir = build
 source-dir = source
 
 [wheel]
 universal = 1
-
-[pbr]
-warnerrors = True