btrfs-progs: tests: add more tests to the CI build

Run more tests in the travis build environment. The mkfs tests are still
left out due to missing capabilities of losetup.

Other minor travis adjustments.

Signed-off-by: David Sterba <dsterba@suse.com>

.travis.yml

@@ -23,8 +23,10 @@ compiler:
   - gcc
   - clang
 
+cache: ccache
+
 git:
-  depth: 3
+  depth: 2
 
 dist: trusty
 group: unstable
@@ -33,6 +35,8 @@ branches:
   only:
   - devel
   - coverity_scan
+  - master
+  - release-test
 
 env:
   global:
@@ -57,5 +61,6 @@ addons:
 
 script:
   - "./autogen.sh && ./configure --disable-documentation && make"
-  - "make test-cli"
-  - "make test-check"
+  - "make TEST_LOG=dump test-cli"
+  - "make TEST_LOG=dump test-check"
+  - "make TEST_LOG=dump test-misc"